單項選擇題Suppose the rated capacity of the main engine of a ship is 10,000 KW at 100 rated rpm, then when at 80 rpm its capacity should be （）.

A.800 KW
B.5120 KW
C.6400 KW
D.4180 KW


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1.單項選擇題Cylinder wall temperature, fuel oil supplier, and oil passage （）.

A.are interdependent
B.are not interdependent
C.have nothing to do with each other
D.are independent

2.單項選擇題The development of oils （） the increasing demands made by the steady rise in powers produced by modem diesels.

A.has kept pace with
B.has kept pace to
C.has made pace with
D.has made pace to

3.單項選擇題（）the compression ratio, （） the proportion of the heat energy of the combustion turned into useful work at the crankshaft, other things being equal.

A.The high；the large
B.The higher；the larger
C.The lower；the larger
D.The low ；the large

4.單項選擇題（） the cylinder walls, the heat passes through them by conduction.

A.When receiving by
B.When received by
C.In order to receiving
D.In order to receive

5.單項選擇題The hot expanding gas rotates the blades of the exhaust turbine, thus （） a large of its power, （） drives the compressor.

A.to give off；which
B.giving off；which
C.to give off；that
D.giving off；that