單項(xiàng)選擇題What can be used to measure the percentage of oxygen inside a chain locker?（）

A.Flame safety lamp
B.Combustible gas indicator
C.Oxygen indicator
D.H2S meter


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1.單項(xiàng)選擇題What best describes an anchor buoy?（）

A.A black ball that is hoisted when the ship anchors
B.A buoy attached to the anchor
C.A buoy attached to the scope of an anchor chain
D.A mark of the number of fathoms in an anchor chain

2.單項(xiàng)選擇題What are the two main types of stud link chain?（）

A.Oil Rig chain and Oil Field Stud Link chain
B.Flash-butt welded chain and Di-Lok chain
C.Flash-butt welded chain and Oil Rig chain
D.Oil Field Stud Link chain and Flash-butt welded chain

3.單項(xiàng)選擇題What action should you take to compensate for the abovecurrent?（）

A.Continue on the same course and speed
B.Alter your course to the right
C.Slow to 8.5 knots
D.Alter your course to the left

4.單項(xiàng)選擇題Under identical load conditions，nylon，when compared with natural fiber line，will stretch（）.

A.less and have less strength
B.more and have less strength
C.more and have greater strength
D.less and have greater strength

5.單項(xiàng)選擇題Uncoiling manila line improperly can result in a(n)（）.

A.number of fishhooks
B.kink in the line
C.50% loss of efficiency of the line
D.increase in deterioration of the line