单项选择题
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
单项选择题 In the combustion chamber, the part whose surface is exposed to the highest temperature is the （）.
单项选择题 As to the bearing, of the following, which statement is not true?（）
单项选择题 As to the piston cooling, of the following, which statement is not true?（）
