默认题库 - 船舶索具及保养

单选题

The disadvantage of using three strand nylon line for towing is its（）.

A. inherent weakness
B. tendency to rot if left damp
C. danger to crew if it parts
D. strength and shock absorbing abilitie

查看答案

单选题

The main advantage of a Chinese stopper over the one line stopper is that it（）.

A. will not jam on the mooring line
B. is stronger
C. is easier to use when under heavy tension
D. is safer to use when under heavy tensio

查看答案

单选题

Tugs sometimes shackle a length of chain in the towline in order to（）.

A. take the wear should the towline drag bottom
B. assure that if the towline is overstressed it will part close to the bridle
C. prevent the towline from whipping should it part
D. put spring in the towline

查看答案

单选题

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

查看答案

单选题

What happens to the pulling power of a winch when retrieving wire rope?（）

A. It increases
B. It decreases
C. It remains the same
D. It fluctuates，depending on the gearing system

查看答案

单选题

What is a step in attaching a poured metal socket to a wire rope?（）

A. Etch the wire with acid
B. Install a wire seizing on the wire that will be inside the socket
C. Ensure the fiber core is well lubricated
D. Pour molten babbitt metal into the socket

查看答案

单选题

（） are two vertical supports，usually steel，one each side of the centerline of the ship used to support booms.

A. Shrouds
B. King posts
C. Stays
D. Turnbuckle

查看答案

单选题

（）are used for anchor gear in marine work where the chains must withstand the corrosive effects of seawater.

A. Chains
B. Wires
C. Ropes
D. Line

查看答案

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

查看答案

单选题

A cargo boom is a（）.

A. double sized mattress consists of more than 890 coils
B. spar extending from a mast or a king post
C. flap（Becker rudder）can be fitted to the rudder’s trailing edge
D. bridle arrangement having a long beam of the length of the container

查看答案