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Which of the following is a characteristic of a sequence?()
A . A sequence will never generate duplicate values
B . The MAXVALUE of a sequence can be equal to the MINVALUE
C . It is not possible to create a sequence that generates a constant since the INCREMENT value must be greater than zero
D . When a sequence cycles back to either the MAXVALUE or MINVALUE, it will always be equal to the specified value of either of these two boundarie
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Which of the following is a feature of a unit of work?()
A . It applies to a single data server.
B . It is a recoverable sequence of operations.
C . Its value can be queried from the system catalog tables.
D . It begins when the application connects to the data server.
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Which of these is a correct description of SSO?()
A . It will only become active after a software failure.
B . It will only become active after a hardware failure.
C . It requires that Cisco NSF be enabled in order to work successfully.
D . It synchronizes the MAC·, FIB·, and adjacency tables between Active and Standby RouteProcessors.
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Which of the following is a characteristic of a schema?()
A . Foreign key references cannot cross schema boundaries.
B . A DB2 user must be created before a schema with the same name can be created.
C . If no schema is specified when an object is created, the default schema PUBLIC is used.
D . A schema enables the creation of multiple objects in a database without encountering namespace collisions.
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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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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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The disadvantage of using CO2 is that the().
A . CO
does not cool the fire
B . cylinders are regulated pressure vessels
C . C0
is not effective on class B fires
D . C0
is not effective on class C fire
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Cylinder linings constructed as an integral part of the block, are characterized by which of the following disadvantages?()
A . They conduct heat poorly
B . They are expensive
C . They cannot be replaced
D . They require special tools for removal
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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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A disadvantage of a four-stroke/cycle diesel engine is ()
A . higher working temperature of piston and cylinder
B . the use of scavenge ports
C . fewer power strokes per revolution of the crankshaft
D . part of the fuel is burned as the piston is moving away from top dead center
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The disadvantage of using three strand nylon line for towing is its().
A . inherent weakness
B . tendency to rot if left damp
C . danger to crew if it parts
D . strength and shock absorbing abilitie
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Which of the following are the formats of the outline when you write an advantage or disadvantage essay?
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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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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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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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The disadvantage of optical fiber communication is high transmission loss. ()
是
否
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2. Which of the following is not a part of a resume? Which choice is incorrect?
A、A. Personal information
B、B. salutation
C、C. Job objectives
D、D. Work experience
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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)