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
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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
A.At least two lifeboats
B.A radiotelephone
C.A radio direction finder
D.None of the above
A.carried by hand to a fire
B.carried or rolled to a fire
C.recharged in the field
D.used on class "B" fires
最新試題
An example of a grade B product is（）.
Antiseptics are used principally to（）.
An example of an anchor which has a stock is a（）.
An engine compartment gasoline fire requires which type of extinguisher?（）
An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.
AMVER is a system which provides（）.
An “on-load” release system on a survival craft means the cable can be released（）.
An all-round flashing yellow light may be exhibited by a(n)（）.
An anchored vessel is servicing an aid to navigation and is restricted in her ability to maneuver. Which lights will she show? （）
An entry of water，gas，oil，or other formation fluid into the wellbore is called a（）.