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One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is （）.
A . the "snow" which is sometimes discharged along with the gas is toxic
B . prolonged exposure to high concentrations of C0
gas causes suffocation
C . rapid dissipation of the C0
vapor
D . the C0
gas is lighter than air and a large amount is required to extinguisha fire near the deck
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What is the primary disadvantage of a permanent chain chaser system?（）
A . It requires anchor handling boats with more horsepower
B . Chain chasers work in shallow water only
C . Chain chasers will not work with piggyback anchors
D . It takes longer to deploy anchors using chain chaser
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What are disadvantages of Network Address Translation Transparency?（）
A . There is no disadvantage.
B . It will add 16 bytes per packet of overhead(8 bytes UDP header, and 8 bytes of NON-IKE Marker).
C . It will add 36 bytes per packet of overhead (20 bytes of IP header, 8 bytes of UDP header, 8 bytes of NON-IKE Marker).
D . It will require that both crypto peers support this feature in the IOS version. Both crypto peers must also have this feature enabled.
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Inter-VLAN routing has been implemented in the Company network. In VLAN routing， what are some of the disadvantages of designing a router-on-stick configuration？ （）
A . InterVLAN routing cannot be filtered by the router.
B . The router becomes a single point of failure for the network.
C . Routers will not route STP BPDUs.
D . There is a possibility of inadequate bandwidth for each VLAN.
E . Additional overhead on the router can occur.
F . NetFlow Switching is required for InterVLAN accounting.
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There are two disadvantages to CO2 pump as a firefighting agent. One of these is the limited quantity available，and the other is（）.
A . the lack of cooling effect on heated materials
B . that it cannot be used in a dead ship situation with no electrical power to the CO
pump
C . that it breaks down under extreme heat to form poisonous gases
D . there is no effect on a class A fire even in an enclosed space
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Which is a disadvantage of Halon as a fire extinguishing medium?（）
A . Conducts electricity
B . Difficult to store
C . Large volume necessary to be effective
D . Ineffective in powdered metal fire
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Which characteristic is a disadvantage of a controllable- pitch propeller as compared to a fixed-pitch propeller? （）
A . Slightly higher fuel consumption
B . Lack of directional control when backing
C . Inefficient at high shaft RPM
D . Some unusual handling characteristic
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One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is（）.
A . the extra weight required for the diesel reduction gearing
B . a minimum speed for the engines that limits the minimum speed of the vessel
C . the higher fuel consumption per SHP
D . the low efficiency of the system when a controllable pitch propeller is used
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The disadvantage of using a heaving line to pass a towline is that（）.
A . it increases the likelihood of collision between the towing vessel and the disabled vessel
B . recreational boaters tend to make the heaving line fast to the towed vessel as if it were the towline
C . the monkey fist may injure someone
D . it may reduce the catenary and increase yawing
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Southern troops were often at a disadvantage facing the mobile northern cavalry. While _________ provided an effective, though not perfect, defense line.
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What is the main disadvantage of using a credit card?
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Which of the following options for reducing an expected labor surplus has the benefit of being a relatively fast solution, but the disadvantage of being high in human suffering?
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The
children from poor families were at a distinct disadvantage.
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One disadvantage ofmerit pay is its inability to define and reward a broad range of performancedimensions.
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Unregulated power supplies contain three basic components: a transformer, retifier and filter capacitor. Thi type of power supply, because of its simplicity, is the least costly. The disadvantage is that the output voltage is not constant.
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A disadvantage of the result-based approaches to performance measurement is that individuals may focus only on aspects of their performance that are measured, neglecting those that are not.
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9：Travelling companions are a disadvantage, according to the writer, because they ______.
A.give you the wrong impression about the journey
B.distract you from your reading
C.intrude on your private observations
D.prevent you from saying what you think
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What' s the reason for twins to be at a disadvantage in their intellectual development？
A．They can only understand their own private language.
B．They communicate with outsiders less than non-twins.
C．There is little stimulation for them.
D．Adults don' t like to talk with them.
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What are the disadvantages of powder metallurgy（)
A．A.metal powders may deteriorate quickly
B．B.fixed and setup costs are high
C．C.non-moldable features are impossible to produce
D．D.sharp corners can be hard to produce
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Since pleasure is the first good and natural to us, for this very reason we do not choose every pleasure, but sometimes we pass over many pleasures, when greater discomfort accrues to us as the result of them; and similarly we think many pains better than pleasures, since a greater pleasure comes to us when we have endured pains for a long time. Every pleasure then because of its natural kinship to us is good, yet not every pleasure is to be chosen; even as every pain is also an evil, yet not all are always of a nature to be avoided. Yet by a scale of comparison and by the consideration of advantages and disadvantages we must form. our judgement on all these matters. For the good on certain occasions we treat as bad, and conversely the bad as good.
We must consider that of desires some are natural, others vain, and of the natural some are necessary and others merely natural; and of the necessary some are necessary for happiness, others for the repose of the body, and others for very life.
Unhappiness comes either through fear or through vain and unbridled desire; but if a man curbs these, he can win for himself' the blessedness of understanding. Of desires, all that do not lead to a sense of pain, if they are not satisfied, are not necessary, but involve a craving which is easily dispelled, when the object is hard to procure or they seem likely to produce harm. Wherever in the case of desires which are natural, but do not lead to a sense of pain, if they are not fulfilled, the effort is intense, such pleasures are due to idle imagination, and it is not owing to their own nature that they fail to be dispelled, but owing to the empty imaginings of the man.
The disturbance of the soul cannot be ended nor true joy created either by the possession of the greatest wealth or by honour and respect in the eyes of the mob or by anything else that is associated with causes of unlimited desires. We must not violate nature, but obey her; and we shah obey her if we fulfil the necessary desires and also the natural, if they bring no harm to us, but sternly reject the harmful. The man who follows nature and not vain opinions is independent in all things. For in reference to unlimited desires even the greatest wealth is not riches but poverty.
Insofar as you are in difficulties, it is because you forget nature; for you create for yourself unlimited fears and desires. It is better for you to be free of fear lying upon a pallet, than to have a golden couch and a rich table and be full of trouble.
What does "greater discomfort accrues to us" in Paragraph 1 mean here？
A．We get greater discomfort over a period of time.
B．We are tortured by greater discomfort.
C．Greater discomfort exists in our body.
D．Greater discomfort makes us miserable.
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The first is broadly the way Britain is at the moment: a mosaic of communities--Bangladeshi, Afro- Caribbean, Chinese or Jewish holding fast to a strong social identity, but lumbered also with a whole raft of benefits and disadvantages, most of them defined in economic terms l6. It's possible that will still be the pattern in 50 years time, but not very likely.
……
The alternative is a pick-and-mix social landscape. At the moment ethnic minorities are moving in different directions at different rates, with personal and social engagement across ethnic boundaries increasing all the time. One crude indicator is the level of mixed race marriage: one in five Bangladeshi and Pakistani men born in Britain now has a white wife, and one in five babies born in Britain has one Afro-Caribbean and one white parent.
This implies a Britain in which people will construct multiple identities defined by all sorts of factors: class, ethnicity, gender, religion, profession, culture and economic position. It won't be clear-cut. Not all ethnic minorities, or members of an ethnic minority, will be moving in the same direction or identifying the same issues at the heart of their identities. It's about deciding who you are, but also about how other people define you.
That's what will be at the heart of the next 50 years: enduring communities linked by blood through time versus flexible, constantly shifting identities. Identity won't be about where you have come from; it will be a set of values you can take anywhere that is compatible with full participation in whichever society you live in.
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Anti-dopiing nation would be at a competitive disadvantage if other nations failed to ________.
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In any country the wages commanded by laborers who have comparable skills but who work in various industries are determined by the productivity of the least productive unit of labor, i.e., that unit of labor which works in the industry which has the greatest economic disadvantage. We will represent the various opportunities of employment in a country like the United States by symbols: A, standing for a group of industries in which we have exceptional, economic advantages over foreign countries; B, for a group in which our advantages are less; C, one in which they are still less; D, the group of industries in which they are least of all.
When our population is so small that all our labor can be engaged in the group represented by A, productivity of labor (and therefore wages) will be at their maximum. When our population increases so that some of the labor will have to be set to work in group B, the wages of all labor must decline to the level of the productivity in that group. But no employer, without government aid, will yet be able to afford to hire labor to exploit the opportunities represented by C and D, unless there is a further increase in population.
But suppose that the political party in power holds the belief that we should produce every thing that we consume, that the opportunities represented by C and D should be exploited. The commodities that the industries composing C and D will produce have been hitherto obtained from abroad in exchange for commodities produced by A and B. The government now renders this difficulty by placing high duties upon the former class of commodities. This meads that workers in A and B must pay higher prices for what they buy, but do not receive higher prices for what they sell.
After the duty has gone into effect and the prices of commodities that can be produced by C and D have risen sufficiently, enterprisers will be able to hire labor at the wages prevailing in A and B, and establish industries in C and D. So far as the remaining laborers in A and B buy the products of C and D, the difference between the price which they pay for those products and the price that they would pay if they were permitted to import those products duty-free is a tax paid not to the government, but to the producers in C and D, to enable the latter to remain in business. It is an uncompensated deduction from the natural earnings of the laborers in A and B. Nor are the workers in C and D paid as much, estimated in purchasing power, as they would have received if they had been allowed to remain in A and B under the earlier conditions.
When C and D are established, workers in these industries______.
A．receive higher wages than do the workers in A and B
B．receive lower wages than do the workers in A and B
C．are not affected so adversely by the levying of duties as are workers in A and B
D．receive wages equal to those workers in A and B
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A disadvantage of the sole proprietorship is the fact that the sole proprietor has_.独资经营的一个缺点是独资经营者有_（）
A．unlimited liability for the debts of the firm （承担对企业债务的无限责任）
B．expensive costs to establish the firm （建立公司的昂贵费用）
C．limited authority over the day-to-day business decisions of the firm （对公司日常业务决策的有限权限）
D．limited liability for the debts of the firm （承担对企业债务的有限责任）
