第8题: [单项选择]数控机床的优点是_______。 A. 加工精度高、生产效率高、工人劳动强度低、可加工复杂型面、减少工装费用 B. 加工精度高、生产效率高、工人劳动强度低、可加工复杂型面、工时费用低 C. 加工精度高、专用于大批量生产、工人劳动强度低、可加工复杂型面、减少工装费用 D. 加工精度高、生产效率高、对操作人员的技术水平要求较低、可加工复杂型面、减少工装费用 参考答案:A
第30题: [单项选择]{{B}} Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. The transportation for the trip is free. B. The class don’t enjoy going on the field trip. C. Some people may not go on the trip. D. All of the class members have paid the fee. 参考答案:C 答案解析:[听力原文]
M: I think the whole class’s going on the field trip next Friday.
W: I’m not so sure. Not e
