第9题: [单项选择]发信时置换器(或者球)的复现性与机械检测开关动作的复现性之间的关系是(). A. 球位置的复现性(球位置的误差),不如检测开关动作复明性好 B. 球位置的复现性(球位置的误差),比检测开关动作复现性好 C. 球位重的复现性(球位置的误差)和检测开关动作复现性一致 D. 球位置的复明性(球位置的误差)和检测开关动作复明性好坏随机出现 参考答案:A
第29题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. He doesn’t like messy people. B. He doesn’t know where their house is. C. He sees no need to clean the house. D. He can think of no worse time for their friends to come. 参考答案:C 答案解析:[听力原文] W: Tom, get up, please! I have to clean it up. Our friends will be here at any time and th