【名词&注释】
直升机(helicopter)、安全措施(safety measures)、安全帽(crash helmet)、安全网(safety net)、帕斯卡(pascal)、钢质活塞环(steel piston rings)、落水者(fall in water person)、注油孔(grease hole)、毫米汞柱(millimeter of mercury)、活塞环槽(piston ring groove)
[单选题]记录血压的毫米汞柱(millimeter of mercury)（mmHg）与帕斯卡（KpA）其换算方法是：
A. mmHg÷7.5=KpA
B. mmHg×7.5=KpA
C. mmHg=KpA
查看答案&解析
举一反三：
[单选题]When the ship, its main propulsion device equipped with clutch, arrived at the port and finished with the engine, the correct operation should be______.
A. disengaging the clutch firstly, then stopping the main engine
B. stopping the main engine firstly, then disengaging the clutch
C. stopping the cooling water pump firstly, then stopping the main engine
D. stopping the main engine and disengaging the clutch at the same time
[单选题]因各港口燃油质量相差很大，导致燃油质量发生很大的变化，当黏度变化太大时，可临时对VIT装置进行调节，将手柄( )，这样可使爆压提高，排温降低，改善燃烧状况，减少结炭。
A. 向“一”方向调节，使喷油定时滞后2-30
B. 向“+”方向调节，使喷油定时提前2-30
C. 向“一”方向调节，减少供油量
D. 向“+”方向调节，减少供油量
[单选题]气缸套内表面上的布油槽与注油孔(grease hole)成()
A. 水平方向布置
B. 倾斜向上布置
C. 倾斜向下布置
D. 垂直方向布置
[单选题]寒冷水域落水者(fall in water person)保持HELP姿势的最大优点是：
A. 减少体温散失
B. 减少体力
C. 使头部露出水面
[单选题]safety net
A. 安全措施
B. 安全网
C. 安全帽
D. 安全防护
[单选题]在正常天气下，直升机的最大活动半径为：
A. 50～150海里
B. 150～250海里
C. 250～350海里
[单选题]修理过度磨损的钢质活塞环槽(piston ring groove)可采用_______方法使之恢复原始尺寸
A. 光车
B. 喷焊
C. 光车＋镀铬
D. 镀铁
[单选题]When the machinery spaces are in the periodic unmanned condition, ____ shall be immediately available and on call to attend the machinery space
A. the chief engineer
B. the designated engineer from shipyard
C. the designated duty officer in charge of the engineering watch
D. the designated surveyor from classification society
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