A.enlarge bit
B.casing bit
C.hole opener
D.casing opener
您可能感興趣的試卷
你可能感興趣的試題
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
A.dead reckoning
B.pilotage
C.great circle sailing
D.geographic navigation
最新試題
Full details of all lights and fog signals are shown on（）.
The mean draft of a ship is the draft（）.
The ISM code is part of（）.
Which of the following is not a form of precipitation?（）
The force resulting from the earth’s rotation that causes winds to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere is called（）.
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
The circulation around a low pressure center in the Northern Hemisphere is（）.
When the wave period and the apparent rolling period are the same（）.
（）is where the crew eat their meals.
The company should establish and maintain procedures to control all documents and date which are relevant to（）.