_____ shows 1.2 meter and the specific gravity of the oil is

【名词&注释】

模拟器(simulator)、呼吸道(respiratory tract)、岗位责任制(post responsibility system)、救生艇(boat)、封闭式(closed-end)、轮机长(chief engineer)、四冲程柴油机(four-stroke diesel engine)、重量轻(light weight)

[单选题]_____ shows 1.2 meter and the specific gravity of the oil is 0.96According to the measuring scale, that makes 150 tons.

A. The piston rod
B. The push rod
C. The sounding rod
D. The connecting rod

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学习资料：

[单选题]The dockers are busy ________ their work

A. in
B. with
C. at
D. by

[单选题]物质燃烧时产生大量的烟，各不同物质产生烟的颜色也不同，而石油产品燃烧时通常产生的烟是

A. 灰黑色
B. 黄白色
C. 浓黑色
D. 白色

[单选题]部分封闭式救生艇的结构特点是（）

A. 便于登乘、操作，减轻了人员自我保护的负担
B. 便于登乘、操作、重量轻^{(light weight)}，倾覆后人员不易逃离
C. 便于登乘、操作、避免了人员暴露、倾覆后人员不易逃离

[单选题]STCW78/95公约新增的培训项目有＿。

A. 模拟器
B. 海员安全和社会责任
C. 防火和灭火
D. 人员基本急救

[单选题]按岗位责任制＿不用参加轮机部的安全值班工作。

A. 轮机长^{(chief engineer)}
B. 大管轮
C. 二、三管轮
D. 轮机长^{(chief engineer)}和大管轮

[单选题]Low compressor head pressure in a refrigeration system can be caused by ___.

A. insufficient condenser cooling water
B. excessive condenser cooling water
C. air in the refrigeration system
D. excessive refrigerant in the system

[单选题]You are attempting to parallel two AC generators and the synchroscope pointer is revolving in the slow direction. This indicates that the frequency of the incoming machine is

A. higher than the bus frequency
B. lower than the bus frequency
C. file same as file bus frequency but out of phase with it
D. the same as the bus frequency, and the circuit breaker may be closed at nay pointer position

[单选题]伤员运输中，对神志不清、危重伤员要随时注意其______是否畅通。

A. 大便
B. 小便
C. 伤口引流管
D. 呼吸道

[单选题]在四冲程柴油机^{(four-stroke diesel engine)}中，曲轴转角大于180°的行程有()

A. 进气行程
B. 燃烧及膨胀行程
C. 排气行程
D. A+C

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