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听力原文：W: Clinic. Can I help you? M: Good afternoon. This is Frank Stone. I want to make an appointment with Doctor Milton, please. W: OK, Mr. Stone. We have you on our records. Can you manage this afternoon? M: I'm afraid not. I can manage tomorrow. W: I'm afraid Mr. Milton is not on duty tomorrow. He'll be here the day after tomorrow. That's Thursday, March 27th. M: Fine. W: Will 5:20 be all right? M: Well, yes. But what time is the clinic closed? W: We start from 9:00 a.m. and close at 7:00 p.m. on weekdays. We don't work at the weekend. M: I'd prefer a later time so that I can come along after work. W: Then what about 6:15? M: Well, that's fine. Why won't Mr. Stone come to the clinic tomorrow?A.
He can't spare the time.
B.
The clinic will be closed.
C.
Dr. Milton won't come to work.
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【单选题】按检验目的抽样分为()周期检验抽样、定型检验抽样和仲裁检验抽样。
A.
验收抽样和监督抽样
B.
仲裁检验抽样和监督抽样
C.
计量型抽样和验收抽样
D.
计数型抽样和周期检验抽样
【单选题】检验目的和对象抽样分为验收抽样、监督抽样、周期检验抽样、( )。
A.
定型检验抽样和仲裁检验抽样
B.
仲裁检验抽样和监督抽样
C.
计量型抽样和验收抽样
D.
计数型抽样和周期检验抽样
【简答题】检验目的抽样分为：();();()、定型检验抽样和仲裁检验抽样。
【简答题】钻床使用的安全要求: 1 工作前,对所有钻床和工具、夹具、量具要进行 ,确认无误后方可操作。 2 工件装夹必须牢固可靠,工作中严禁 。 3 手动进给时,一般按照 和逐渐减压原则进行,用力不可过猛,以免造成事故。 4 钻头上绕有长铁屑时,要 钻床,然后用 或 将铁屑清除。 5 不准在旋转的刀具下 、 或测量工件,手不准触摸旋转的刀具。 6 摇臂钻的横臂回转范围内不准有障碍物,工作前横臂 。 7 横臂...
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