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【单选题】
融冰作业前,应确认待融冰线路(含导线、地线、OPGW光缆)及有关装置对塔身等接地体的距离满足()
A.
融冰电压不击穿的安全要求
B.
电气安全距离
C.
带电作业要求
D.
停电作业要求
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参考答案:
举一反三
【单选题】从总体中按一定方式抽出一部分元素的集合叫
A.
抽样
B.
抽样框
C.
样本
D.
抽样单位
【单选题】P46.若有以下窗体单击事件过程:打开窗体运行后,单击窗体,则消息框的输出内容是
A.
1
B.
4
C.
15
D.
120
【单选题】乒乓球比赛场地空间高度应不得低于( )米?
A.
8
B.
6
C.
4
D.
5
【判断题】专业库只能用于存放某单一品种的物品。
A.
正确
B.
错误
【判断题】专业库只能用于存放某单一品种的物品。A. 对 B. 错
A.
正确
B.
错误
【单选题】In more than a century of hand-to-hand combat in shops, supermarket aisles, restaurants and bars around the world, Coca-Cola has nearly always been in the lead and Pepsi in second place. When Warren B...
A.
Mr. Buffett is the investor of Coca-Cola.
B.
Pepsi is served in the pizza parlour.
C.
Coke is now served in the pizza parlour.
D.
Coke used to win the battle against Pepsi.
【简答题】本书中,希望放大电路的输入电阻越()越好,因为重点讨论电压对电压放大倍数。
【单选题】从总体中按一定方式抽出一部分元素的集合叫()
A.
抽样
B.
样本
C.
抽样单位
D.
抽样框
【单选题】 He acted________nothing had happened to him.
A.
as if
B.
as
C.
when
D.
if
【单选题】I was really angry about his behavior. He acted as if nothing _____________.
A.
has happened
B.
had happened
C.
happened
D.
would happen
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