The disadvantage of optical fiber communication is high transmission loss. （)

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

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

A . less even torque B . higher cylinder head temperatures C . fewer power strokes per revolution D . greater weight/size requirement

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.

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

A . Cost B . Speed C . Lost and damage ratios D . Transit time and frequency of service

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

A . They conduct heat poorly B . They are expensive C . They cannot be replaced D . They require special tools for removal

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

A . inherent weakness B . tendency to rot if left damp C . danger to crew if it parts D . strength and shock absorbing abilitie

A . Complex functional budgeting B . Poorly established communication channels C . No single focal point for clients/sponsors D . Slow reaction capability E . Inflexible use of manpower

A．wasting time and energy. B．creating pollution. C．not being safe. D．not always being available.

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

A.The gist may sound subjective. B.The draft is hard to memorize. C.The answers are isolated points. D.The questions lack correlations.

…… 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.

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）