更多"[单选题] The most serious danger from "的相关试题:
[单选题] Ropes or wires attached to derricks to prevent them from swinging during cargo handling operations are __________．
A.Preventers
B.Side ropes
C.Stays
D.Guide lines
[单选题] Unlike wires, synthetic ropes do not give audible_____of pending failure and may not exhibit any broken elements before completely parting
A.broken
B.slack
C.track
D.sign
[单选题]If you have steel wire ropes leading in the same direction with other ropes, which will take the most of the load?
A. Steel wire rope
B. Manila
C. Nylon
D. Polypropylene rope
[单选题] ______________ is taken from the lower most point of the keel to the summer load line.
A. Extreme draft
B. Molded draft
C. Extreme depth
D. Molded depth
[单选题] If there were suddenly an immediate danger for both the vessel and its crew, would you send a MAYDAY on ______?
A. Ch06 with dual watch
B. Ch06 with 25 watts output
C. Ch16 with 1 watts output
D. Ch16 with 25 watts output
[单选题] Snapback is a serious danger when we are handling_____.
A. Wire rope
B. Nylon ropes only
C. Synthetic ropes
D. Manila
[单选题] You are running into danger, ______.
A. Shallow water ahead of you.
B. Submerged wreck ahead of you.
C. Rick of collision imminent.
D.
A,
B, C are all right.
[单选题] Radar makes the most accurate determination of the ______.
A. direction of target
B. distance of target
C. size of a target
D. shape of a target
[单选题] The lines forward from the bow and aft from the stern when a vessel is moored to the dock are ______.
A. bow and stern lines
B. breast lines
C. halyards
D. warps
[单选题]Most merchant ships have an emergency generator which is diesel driven and located the engine room.
A.inward
B.inside
C.outside of
D.within
[单选题] Which instrument is most useful in forecasting fog ________．
A.A barometer
B.An anemometer
C.A sling psychrometer
D.A pyrometer
[单选题] Cumulonimbus clouds are most likely to accompany a(n) ______.
A. high pressure system
B. cold front
C. warm front
D. occluded front
[单选题] The two most effective generating forces of surface ocean currents are ______．
A.temperature and salinity differences in the water
B.wind and density differences in the water
C.water depth and underwater topography
D.rotation of the Earth and continental interference
[单选题] Most propellers on merchant vessels are constructed of______.
A. manganese bronze
B. cast iron
C. mild steel
D. improved plow steel
[单选题] The variation for most given areas undergoes ______ change，the amount of which is also noted on charts．
A.an annual
B.a constant
C.a variable
D.an unstable
[单选题] Generally speaking，the most favorable bottom for anchoring is ______．
A.Very soft mud
B.Rocky
C.A mixture of mud and clay
D.Loose sand
