【名词&注释】
救生艇(boat)、救生筏(life raft)
[单选题]After a fire has been extinguished in a closed space, personnel may safely enter the space when
A. smoke density has been decreased sufficiently to see the bulkhead opposite the compartment's entrance
B. a lifeline and explosion proof flash light are used
C. all smoke and toxic fumes are removed and an adequate oxygen supply is present
D. overhaul has been completed to remove any possible source of re-ignition
查看答案&解析
举一反三：
[单选题]每只救生筏的构造，应能经受在一切海况下暴露漂浮______天
A. 15
B. 30
C. 50
D. 60
[单选题]湿蒸汽的温度与该压力下的饱和温度之差等于( )。
A. 干度
B. 过热度
C. 零
D. 比潜热
[单选题]吊艇架有两根用来固定救生艇用的稳索，因此，在存放时一定要将两稳索（）
A. 系牢
B. 松懈
C. 随意状态
[单选题]半圆法045°NE换算成罗经点法应为：()
A. 045°
B. 135°SE
C. NE
D. N/E
[单选题]在定容过程中，空气吸收的热量有( )转化为对外作功量。
A. 0%
B. 50%
C. 71.4%
D. 100%
[单选题]活塞刮油环的天地间隙小，其主要目的是( )。
A. 防止刮油环轴向磨损太大
B. 防止刮油环窜动
C. 减少泵油作用
D. 利于散热
[单选题]半圆法110°NW换算成圆周法应为：()
A. 110°
B. 290°
C. 250°
D. 070°
[单选题]When the ship is going to enter into the harbor, ____.
A. change from heavy fuel oil to diesel oil for main engine
B. pumping out bilge water
C. change sea chest from high level one to lower level one
D. test emergency generator
[单选题]互见中，一使用拖网从事捕鱼的渔船与一操纵能力受到限制的船舶航向交叉相互驶近致有构成碰撞危险，则：
A. 适用交叉局面条款
B. 从事捕鱼的渔船应给操纵能力受到限制的船舶让路
C. 操纵能力受到限制的船舶应给从事捕鱼的渔船让路
D. 两船均应采取避让行动，因为该两船负有同等的避让责任和义务
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