单选题Releasing oil from the sea anchor of a lifeboat may().Akeep the propeller from being fouledBincrease propeller speedChelp calm the waves in the vicinity of the craftDincrease the holding power of the sea anchor
单选题
Releasing oil from the sea anchor of a lifeboat may().
A
keep the propeller from being fouled
B
increase propeller speed
C
help calm the waves in the vicinity of the craft
D
increase the holding power of the sea anchor
参考解析
解析:
暂无解析
相关考题:
单选题关于热力膨胀阀和手动膨胀阀的差别,以下说法中不恰当的是()。A能在更大范围内控制制冷剂流量B热负荷增大时开度增大,可避免蒸发器换热面积得不到充分利用C热负荷减小时开度减小,可防止压缩机吸入湿蒸气D其他条件不变时,流量都与开度成比例
单选题在AutoChief C20型主机遥控系统中,报警灯“Governor disconnected”发亮,说明()。A电子调速器单元未接通电源B电子调速器单元与测速装置之间线路故障C电子调速器单元与油门执行电机之间线路故障D油门执行电机与油门总杆未连接好
单选题Cylinder liners from older lower powered engines had a uniform wall thickness and the cooling was achieved by circulating cooling water through a space formed between ().Acrown and skirtBliner and jacketCring and grooveDjacket and block
单选题某些大型低速柴油机的连杆大端轴承采用无轴瓦形式的优点是()。 Ⅰ.加工方便 Ⅱ.减轻重量 Ⅲ.增大轴颈 Ⅳ.利于滑油输送 Ⅴ.利于散热 Ⅵ.利于滑油分布AⅠ+Ⅱ+ⅥBⅢ+ⅤCⅠ+Ⅴ+ⅥDⅠ+Ⅲ
单选题引起燃烧滞燃期变长的主要原因是()。 Ⅰ.燃油十六烷值偏低; Ⅱ.供油提前角过大; Ⅲ.压缩比过高; Ⅳ.压缩终点压力、温度偏低; Ⅴ.转速升高; Ⅵ.雾化质量好。AⅠ+Ⅱ+ⅢBⅠ+Ⅲ+ⅥCⅠ+Ⅱ+ⅣDⅡ+Ⅳ+Ⅴ
单选题The pressure range between the system cut in and cut out pressures in a refrigeration unit is known as()Aopposing operational dragBpressure distributionCdifferentialDsystem purge
单选题The deck water seal of the inert gas system().Acools the inert gas and prevents soot from entering the cargo tanksBacts as an emergency shutdown when inlet pressures exceed the safe working pressureCprevents the backflow of hydrocarbon gasses into nonhazardous areasDrelieves sudden large overpressures in the system
单选题速船推进方式通常有()种方式。A一B二C三