航海英语水手工艺章节练习(2019.05.12)

单项选择题
A monkey fist is found on a（）.
A.heaving line
B.leadline
C.manrope
D.mooring line
单项选择题
The lay of a line refers to（）.
A.its normal location of stowage
B.the direction of twist in the strands
C.the manner in which it is coiled
D.the manner in which it is rigged
单项选择题
You can safely step in the bight of a line（）.
A.when it is not under strain
B.if both ends are made fast
C.in an emergency
D.at no time
单项选择题
A gypsy or gypsyhead is a（）.
A.punt used for painting over the side
B.small，reciprocating steam engine
C.spool-shaped drum fitted on a winch
D.swinging derrick
单项选择题
What is likely to occur when you are surging synthetic mooring lines on the gypsyhead during mooring operations?（）
A.The lines may jam and then jump off the gypsyhead
B.If there is sudden strain on the line，the man tending the line may be pulled into the gypsyhead
C.The lines' surging may cause the vessel to surge
D.The heat generated may cause the lines to temporarily fuse to the gypsyhead
单项选择题
A deepwell pump is a type of（）.
A.screw pump
B.centrifugal pump
C.eductor
D.gear pump
单项选择题
When a pilot is on board to pilot the vessel the Letter（）must be hoisted.
A.G
B.H
C.B
D.N
单项选择题
When the anchor is brought to and holding，the horizontal component of anchor cable tensions should equal the（）.
A.displacement tonnage
B.weight forces
C.buoyancy forces
D.environmental forces
单项选择题
The locking pin that joins the parts of a detachable link is held in position by（）.
A.a tack weld
B.the self-locking characteristics of its taper
C.a cotter pin
D.a lead plug
单项选择题
The cheek length of a block in inches should be about（）.
A.three times the circumference of a manila line
B.five times the diameter of a manila line
C.twice the diameter of its sheaves for manila line
D.twenty times the diameter of a manila line