單項選擇題The development of () has kept pace with the increasing demands made by the steady rise in power produced by modem marine diesels.

A.water
B.fresh air
C.oils
D.gases


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2.單項選擇題The design of () is similar to that of the main bearing.

A.the block bearing
B.the camshaft bearing
C.the connecting rod small end bearing
D.the connecting rod large end bearing