【名词&注释】
报警器(alarm)、冷凝器(condenser)、压缩空气(compressed air)、预防为主(prevention first)、救生艇(boat)、烟花爆竹(fireworks)、空气呼吸器(compressed air breathing apparatus)
[单选题]One function provided by a hydraulic accumulator is to ___.
A. provide an area where air can separate from the oil
B. provide an area to separate solid contaminants from the oil
C. act as an oil and water separator
D. absorb shocks occurring in the system
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举一反三：
[单选题]在佩戴空气呼吸器(compressed air breathing apparatus)之前应检查：
A. 压缩空气瓶内的压力。
B. 面罩及整个管路是否气密。
C. 余压报警器是否报警。
D. 以上均对。
[单选题]热气融霜系统如不设通冷凝器进口的回液管，融霜后期如排气压力太高应( )。
A. 稍开冷凝器进口阀
B. 稍关压缩机排出阀
C. 稍开冷凝器出口阀
D. 稍开压缩机吸入阀
[单选题]The operation of paralleling two alternators requires the voltages to be _____ and also in phase
A. zero
B. eliminated
C. different
D. equal
[单选题]有关船员日常防火防爆守则的下列内容，何者正确?
A. 其方针以预防为主，立足自救
B. 在船上燃放烟花爆竹(fireworks)
C. 潮湿油污棉毛织品集中堆放在贮藏室内
D. 以上都正确
[单选题]典型霍乱起病突然，剧烈呕吐、腹泻，大便呈______。
A. 典型脓血便
B. 柏油样大便
C. 水样、米汤样大便
D. 粘液脓血便
[单选题]在回收救生艇时，艇内应留下几人为好。
A. 2人
B. 3人
C. 4人
D. 5人
[单选题]There is ________ in the holds keeping eyes opened to prevent theft
A. watchman
B. watchmen
C. a watchmen
D. a watchman
[单选题]When the refrigeration demand is small,_______.
A. the expansion valve will move toward the wide open position
B. the expansion valve will move toward the closing position
C. the feeler bulb will conveys the high temperature
D. the superheat degree will raise
[单选题]船舶遇险时可使用最先进的报警定位设备是（）。
A. 卫星应急示位标
B. 应急发报机
C. 求救烟火信号
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