A.at all times
B.in the bottom return mode
C.in the volume reverberation mode
D.only when there is no current
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A.heavy
B.easily damaged
C.affected by temperature
D.costly relative to the strength ratio
A.stopper
B.screen
C.filter
D.restrictor
A.rising warm air
B.proximity to a low pressure area
C.inward spiraling circulation
D.clear dry weather
A.Has there been
B.Have there been
C.Has there
D.Have there
A.From
B.By
C.on
D.With
最新試題
It is not necessary to declare（）in MARITIME HEALTH DECLARATION.
How could lashing gear used aboard Ro-Ro vessels be stowed when not in use? （）
A fishing vessel casualty must be reported to the Coast Guard if it involves（）.
A helmsman receives the command “Right 15 degrees rudder.”The helmsman’s IMMEDIATE reply should be（）.
A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a（）.
Permanent magnetism is found in（）.
A heavy steel curved arch constructed athwartships and above the after deck on a towing vessel is sometimes called a（）.
After sending a message describing the symptoms of an ill crew member，you receive a message containing the code MRL. This means（）.
Entries should be made in a Ro-Ro vessel’s cargo-securing device record book for（）.
A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind （）.