A.An amount equal to the depth of the water
B.Two times the depth of water
C.Three to four times the depth of water
D.Five to seven times the depth of water
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A.Carbon disulfide
B.Ethyl alcohol
C.Isoprene
D.Oleum
A.distance
B.largeness
C.diameter
D.measurerment
A.Hoist the boat clear of the cradle
B.Release the outboard part of the cradle
C.Rig the tricing lines
D.Crank the crescent out
A.Distance line
B.Gantline
C.Heaving line
D.Tag line
A.The efficiency increases
B.The efficiency decreases
C.The efficiency remains the same
D.The efficiency cannot be determined.
最新試題
What does the term TO NAVIGATE WITH CAUTION mean?（）.
The term OIL as used in the Oil Pollution Regulations means（）.
The expression FIRST MAGNITUDE is usually used to refer only to bodies of magnitude（）.
Fog forms when the air（）.
To reduce mild fever the MOST useful drug is（）.
There is something wrong with our radar．All kinds of objects can’t be clearly（）within the definite range.
The vessel was drifted off from her（）due to strong wind.
The expression DROP ANCHOR means（）.
What happens to the efficiency of an anchor when it is moved from sand to mud?（）
In radiotelephone communications，the prefix PAN-PAN indicates that（）.