题目
A check line is ______.
A.A safety line attached to a man working over the side
B.Used to measure water depth
C.Used to slow the headway of a barge
D.Used to measure the overhead height of a bridge
第1题
It can be inferred that the "safety valve" in line 13 refers to
A.a new kind of machinery
B.an alternative for urban workers
C.an area in a factory
D.a procedure designed to protect workers
第2题
A.spring line
B.warp line
C.bow line
D.breast line
第3题
A.spring line
B.warp line
C.bow line
D.breast line
第4题
A line of position is ______.
A.a line connecting two charted objects
B.a line on some point of which the vessel may be presumed to be located
C.the position of your vessel
D.not used in a running fix
第5题
In the note, the phrase "Check out" in paragraph 1, line 2, is closest in meaning to
A.pay for
B.look at
C.leave out
D.ask about
第6题
What does "in-flight service" (Line 1, Para, ) mean?
A.Service on the plane.
B.A new safety device.
C.Flights within one country.
D.Charge-free air service.
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