更多"[单选题] The size of wire rope is dete"的相关试题:
[单选题] What is the accepted standard for wire rope falls used in connection with the lifeboat gear ________．
A.Six by seven galvanized wire rope
B.Six by twenty-four improved plow steel wire rope
C.Six by thirty-seven preformed fiber-core wire rope
D.Six by nineteen regular-lay filler wire rope
[单选题] A common class of wire rope used for mooring is the 6x19 class. What does the 6
Represent?
A. Factor of safety
B. Number of wires per strand
C. Number of strands per wire rope
D. Number of wires in the core
[单选题]A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain ______．
A.is more flexible and has the ability to absorb shock because of its weight
B.is less subject to wear and damage from abrasion
C.requires little maintenance
D.All of the above
[单选题] A 6x19 wire rope would be ______．
A.6 inches in diameter and 19 fathoms long
B.6 inches in circumference with 19 strands
C.6 strands with 19 wires in each strand
D.19 strands with 6 wires in each strand
[单选题] Which will cause a wire rope to fail ________．
A.Using a medium graphite grease as a lubricant
B.Operating a winch too slow
C.Using a sheave with an undersized throat
D.A sheave diameter of 24 times the wire's diameter
[单选题] A 6x12，two-inch wire rope has ______．
A.12 strands and a two-inch diameter
B.12 strands and a two-inch circumference
C.6 strands and a two-inch diameter
D.6 strands and a two-inch circumference
[单选题] An advantage of nylon rope over manila rope is that nylon rope ______．
A.Can be used in conjunction with wire or spring-lay rope
B.Can be stored on decks exposed to sunlight
C.Can hold a load even when a considerable amount of the yarns have been abraded
D.Gives audible warning of overstress whereas manila does not
[单选题]The ideal rope for stoppers should satisfy the following requirements except that _____.
A. The stopper should be of synthetic fibre rope
B. The size of the stopper should be as large as possible
C. The stopper should be of low stretch material
D. The stopper should be very flexible
[单选题] A natural fiber rope can be ruined by dampness because it may ______．
A.rot
B.shrink
C.stretch
D.unlay
[单选题] Stability is determined principally by the location of the point of application of two forces: the upward-acting buoyant force and the ______.
A. upward-acting weight force
B. downward-acting weight force
C. downward-acting buoyant force
D. environmental force
[单选题]Wire Splint 是 ( )。
A.清醒剂
B.止痛药
C.金属夹板
D.三角巾
[单选题]The fact that electric currentsa wire produce heat is known to all.
A.passed in
B.passed through
C.passes
D.passing through
[单选题] A single heavy wire made up for the topping lift
is called a ______．
A.Bale
B.Spanner wire
C.Bull line
D.Working guy
[单选题]First Aid Kit中的WIRE SPLINT是 。
A.胶布
B.止血贴
C.金属夹板
D.棉签
[单选题] Compared to manila line，size for size，nylon line _______.
A. has less strength than manila line
B. has more strength than manila line
C. is equivalent to manila line
D. will rot quicker than manila line
[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] A deck fitting，used to secure line or wire rope，consisting of a single body with two protruding horns is called a ______．
A.Bitt
B.Bollard
C.Capstan
D.Cleat
