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【单选题】
使用专用夹具最大的优点是能可靠地（）提高劳动生产率，降低制造成本，改善工人的劳动条件。A.
提高技术水平
B.
美化工作环境
C.
保证加工精度
D.
缩短工时定额
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】I'd like to borrow your cell phone to call my friend in London.
【单选题】听力原文：What's your hobby? (9)
A.
I like reading.
B.
I'd like to wait for a minute.
C.
I'd like some chicken.
【单选题】I am grateful for your ______ invitation, and I'd like to accept your offer with pleasure.
A.
delighted
B.
innocent
C.
gracious
D.
prestigious
【简答题】A．Yes, I'd like to know your name. B．Yes, I'd like to have a talk with you. C．Yes, I'd like to change some US dollars. D．Yes, I'd like not to bother you.
【单选题】-Hello! This is Henry Speaking. I'd like to speak to your father. -Sorry, he has Shanghai. [ ]
A.
been in
B.
been to
C.
gone to
D.
come to
【单选题】开环对数频率特性曲线的高频段曲线的绘制方法是，从低频渐近线开始，每经过一个转折频率，按下列原则依次改变L(ω)的斜率。 经过惯性环节的交接频率，斜率减去20 dB/dec； 经过微分环节的交接频率，斜率增加20 dB/dec； 经过振荡环节的交接频率，斜率减去（ ）。
A.
40 dB/dec
B.
-40 dB/dec
C.
20 dB/dec
D.
-20 dB/dec
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