A.flame stopper
B.flame screen
C.flame filter
D.flame restrictor
您可能感興趣的試卷
你可能感興趣的試題
A.enlarge bit
B.casing bit
C.hole opener
D.casing opener
A.velocity of the current
B.bottom characteristics
C.depth of the water
D.speed over the ground
A.speed being made good
B.speed through the water
C.the set of the current
D.the depth of the water
A.at all times
B.in the bottom return mode
C.in the volume reverberation mode
D.only when there is no current
A.has left hand twist
B.has inside threads on both ends
C.has outside threads on both ends
D.takes two men to operate
最新試題
The dew point temperature is（）.
How long are you prohibited to consume alcohol prior to serving as a member of a watch?（）
The company should establish and maintain procedures to control all documents and date which are relevant to（）.
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
（）is on the panel of radar.
It is dangerous for vessels without the operational radar（）the estuary.
Berthing means bringing a vessel to her berth until（）.
What is a CORRECT reply to a pilot’s request, How’s your heading?（）
Which wind results from a land mass cooling more quickly at night than an adjacent water area?（）
Shipboard Emergency Drills must be carried out at least（）on board cargo ship.