220kV带电检测绝缘子,当发现同一绝缘子串的零值绝缘子片数达到()时,应立即停止检测。
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YB95型条盒透明纸包装机控制面板上按下包装材料选择按钮后选用(),不按则选用包装纸。
数字签名是为了满足电子商务对网上安全交易的要求,这种要求是()
A. 数据加密
B. 数据完整性
C. 身份鉴别
D. 数据完整性和防抵赖
The new executive has done well to make the wholesaler agree()
A. that could benefit both of us.
B. then he could get a large discount.
C. that is made with certain conditions.
D. to be more flexible over terms of payment.
普通万向节要实现等速传动,在安装时需要满足哪些条件?