第20题: [单项选择]A distance piece, with ground faces, may be interposed between the rod and the bearing housing, its thickness being chosen to ensure the correct (). A. expansion ratio B. pressure ratio C. compression ratio D. clearance ratio 参考答案:C
第25题: [单项选择]—Today is my birthday. Can you come to my party tonight —______. [A] Don’t worry. [B] Sure, I’d love to. [C] No,I don’t know. 参考答案:B 答案解析:考查表达。对于别人的邀请,肯定回答一般用I’d love to,否定回答多用Sorry,but...。本题中[A]用于安慰别人,[C]用于回答别人的一般疑问。