Compared to four-stroke/cycle engines, two-stroke/cycle diesel engines have the disadvantage of （）

A . Vapor pressure B . Dew point C . Barometric pressure D . Absolute humidity

A . give better range performance in rain，hail，etc B . display small targets in a mass of dense sea clutter at a greater range C . have less sea return in choppy rough seas D . display a more maplike presentation for inshore navigatio

A . horizontal position of the boom B . vertical position of the boom C . horizontal position of the load being lifted D . vertical position of the load being lifted

A . dischargeendbeingsmallerthanthesuctionend B . smallsizeofimpeller C . lackofmovingparts D . easeatwhichthewearingringsmaybechanged

A . variable B . the same C . lighter D . heavier

A . warmer，less dense，and less stable B . cool，more dense，and drier C . muggy and cloudy D . extremely moist with high relative humidity

A . Security increases because only the network administrator may change the routing tables B . Configuration complexity decreases as network size increases C . Routing updates are automatically sent to neighbors D . Route summarization is compued automatically by the router E . Routing traffic load is reduced when used in stub network links F . An efficient algorithm is used to build routing tables,using automatic updates G . Routing tables adapt automatically to topology changes.

A . PowerPath  B . VisualSAN  C . ControlCenter  D . Storage Essential

A .  monochrome backlit display B .  full-duplex speakerphone C .  MP3 music player D .  dynamic softkeys E .  Bluetooth

A . has less strength than manila line B . has more strength than manila line C . is equivalent to manila line D . will rot quicker than manila line

A . greater high temperature strength B . better heat conductivity C . greater weight per cubic inch D . increased resistance to wear

A . stronger B . thinner C . more corrosion resistant D . a lower grade steel

A . be more suitable for river and harbor navigation B . provide better range performance on low lying targets during good weather and calm seas C . have a wider horizontal beam width D . have more sea return during rough sea conditio

A . Cleaner B . Effective C . Greater range D . More cooling effect

A . Security increases because only the network administrator may change the routing tables. B . Configuration complexity decreases as network size increases. C . Routing updates are automatically sent to neighbors. D . Route summarization iscompued automatically by the router. E . Routing traffic load is reduced when used in stub network links F . An efficient algorithm is used to build routing tables，using automatic updates. G . Routing tables adapt automatically to topology changes.

A．customs officers B．firemen C．doctors D．repairmen

A．tanagers B．hawks C．peregrines D．hummingbirds 此题为多项选择题。

A、Has lower duration. B、May have more or less prepayment risk. C、Allows an investor to select an exact maturity.

是 否