A.has long life
B.is light weight
C.absorbs shock
D.has fine adjustment
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A.increase the towing hawser's catenary and provide more spring
B.reduce catenary，allow operation in shallower water，and to release one barge without breaking up the entire tow
C.enable one tug and its crew without any outside assistance to make up or break down the tow
D.provide rapid delivery of logs from the northwestern United States to Hawaiian sawmills
A.only when the load is taken off the cable
B.only when there is a load on the cable
C.only when activated by the controls at the lowering station
D.at any time
A.Cirrus
B.Cumulus
C.Stratus
D.Nimbus
A.a mattress
B.spilled liquids such as oil or paint
C.high voltage electrical gear
D.a trash can
A.satellite communications
B.navigational information
C.weather information
D.position reporting service
最新試題
All OSV personnel should be familiar with survival craft（）.
An icebreaker may use the code letter “K” to remind ships of their obligation to listen continuously on their radio. This signal may be made by any of the following EXCEPT（）.
An entry of water，gas，oil，or other formation fluid into the wellbore is called a（）.
An airplane should NOT send which signal in reply to a surface craft?（）
An inflatable liferaft is floating in its container，attached to the ship by its painter，as the ship is sinking rapidly. Which action should be taken with respect to the liferaft container? （）
An authorized light to assist in the identification of submarines operating on the surface is a(n)（）.
An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.
An engine compartment gasoline fire requires which type of extinguisher?（）
An advantage of using chain lashing on heavy vehicles aboard Ro-Ro vessels is that it（）.
An advantage of the Christmas Tree towing method is to（）.