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單項(xiàng)選擇題

The fuel oil pressure and forced draught pressure should be matched to ensure good combustion with a full steady flameIn the sentence the word “match” means （）

A.join with
B.mix
C.be equal to
D.be constant

單項(xiàng)選擇題

For Vee-form engines, （） is shaped to given two slopping surface on which （） are placed at the correct relative angle to each other.

A.the bottom of the column；the cylinder blocks
B.the top of the column；the cylinder heads
C.the top of the column；the cylinder blocks
D.the bottom of the column；the cylinder heads