When the ship is going to enter into the harbor, ____.
A.change from heavy fuel oil to diesel oil for main engine
B.pumping out bilge water
C.change sea chest from high level one to lower level one
D.test emergency generator
第1题:
The three basic components of a fire are chain reaction, heat, fuel, and ____.
A.carbon monoxide
B.oxygen
C.carbon dioxide
D.any gaseous substance
第2题:
检索“投中3分球”小于等于5个的运动员中“得分”最高的运动员的“得分”,正确的SQL语句是( )。
A)SELECT MAX(得分)FROM运动员WHERE投中3分球<=5
B)SELECT MAX(得分)FROM运动员WHEN投中3分球<=5
C)SELECT得分MAX(得分)FROM运动员WHERE投中3分球<=5
D)SELECT得分MAX(得分)FROM运动员WHEN投中3分球<=5
第3题:
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the ______.
A.distress position
B.spoken words “Mayday, Mayday, Mayday”
C.ship’s name
D.ship’s call letters
第4题:
A.train
B.bus
C.car
D.ship
第5题:
I am maintaining my course and speed.
A.changing
B.keeping
C.altering
D.going
第6题:
Category 2 fuel _____________________