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【多选题】
关于外用电梯和物料提升机的安全用电事项,下列说法哪一些正确A.
外用电梯和需要设置避雷装置的物料提升机,除应连接PE线外还应做重复接地
B.
金属结构构件之间应保证电气连接
C.
正、反向控制应采用接触器、续电器等自动控制电器
D.
正、反向控制也可以采用手动双向转换开关作为控制电器
E.
每台外用电梯和物料提升机不一定要有自己专用的开关箱
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举一反三
【单选题】Which of the following is not Jane Austen’s work?
A.
Sense and Sensibility
B.
Emma
C.
Persuasion
D.
Wuthering Heights
【单选题】Which of the following is NOT the goal of the S-T-P process?
A.
To evaluate how effective an organization’s marketing mix is.
B.
To help the organization develop an appropriate marketing mix.
C.
To enable the organization to make important marketing decisions concerning where they should compete.
D.
To guide the organization to the implementation of an appropriate marketing mix.
【简答题】_______ : qu'on ne peut pas supporter
【单选题】Which of the following is NOT covered in today's news?
A.
Economic Crisis Takes a Toll on Venezuela 委内瑞拉拉响经济危机警报
B.
"Explosive" Fire Threatens a City in Canada 加拿大一城市遭到 “ 爆炸 ” 火灾的威胁
C.
Major Developments in U.S. Politics 美国政治中的重要变化
D.
21 Surprisingly Expensive Products From Costco 21 种壕得令人吃惊的 Costco 产品
【单选题】Decide which of the following best states the author’s purpose
A.
To give an account of the author’s hard life at home and at school during the Second World War.
B.
To illustrate that words of compassion in times of need enable a person to regain his confidence and exert a lasting influence.
C.
To present a picture of different teachers at her school.
【简答题】电力系统负荷曲线有哪些?他们有何用途?
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