A.vessel laying cable
B.vessel towing a submerged object
C.vessel not under command
D.air cushion vessel
您可能感興趣的試卷
你可能感興趣的試題
A.Opening and closing the throttle
B.Rocking the wings
C.Flashing the navigational lights off and on
D.Flashing Morse T
A.has long life
B.is light weight
C.absorbs shock
D.has fine adjustment
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
最新試題
An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter “E” (Echo) to signify that “（）”.
An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes? （）
All portable fire extinguishers must be capable of being（）.
Air circulation is caused or affected by（）.
All OSV personnel should be familiar with survival craft（）.
An azimuth angle for a body is measured from the（）.
An example of a grade B product is（）.
An “atoll cloud” forming over an island due to heating of the land during the daytime would be which type? （）
All Loran-C transmitting stations are equipped with cesium frequency standards which permit （）.
An “ABC” dry chemical fire extinguisher would be LEAST effective against a fire in（）.