【名词&注释】
神经纤维(nerve fibers)、脊神经(spinal nerve)、脑神经(cranial nerve)、值班人员(operator on duty)、轮机员(engineer)、海事管理机构(maritime administration)
[单选题]For a continuous operation diesel engine, a duplex filter unit would be the best arrangement because
A. changing filter elements would not interrupt engine operation
B. filtering occurs twice in each pass of oil through the system
C. clogging will not occur
D. dropping pressure is half of that through a single filter unit
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举一反三：
[单选题]我国《海船船员值班规则》对在港船舶轮机值班人员组成规定：推进功率为______及以上的船舶，必须安排至少______机工协助值班轮机员(engineer)值班。
A. 750kW/1名
B. 3000kW/1名
C. 750kW/2名
D. 3000kW/2名
[单选题]颜色不变，在一个周期内明的时间长于暗的时间的灯光灯质为：()
A. 明暗光
B. 联闪光
C. 长闪光
D. 混合联闪光
[单选题]根据我国《海船船员发证规则》规定，凡持有海船三管轮适任证书者，实际担任其职务满_____个月，经体检合格，可向海事管理机构(maritime administration)申请办理二管轮职务签证。
A. 12
B. 15
C. 18
D. 24
[单选题]Vessels having main engines arranged for air starting are to be provided with at least__.
A. one automatic drain serving both containers
B. two air starting containers of approximately equal size
C. one control air container and one starting air container
D. one additional means of starting the main engine
[单选题]与脑相连的神经是______。
A. 脊神经
B. 脑神经
C. 运动神经纤维
D. 感觉神经纤维
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