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问题 单项选择题

Each carton is lined ______ a polythene sheet and secured by over all strapping.

A．by

B．in

C．with

D．within

答案

参考答案：C

多项选择题

隔离开关的主要用途，主要体现在( )。

A．为设备和线路检修与分段进行电气隔离

B．利用电弧能量使绝缘油分解和气化产生气体吹弧

C．在断口两端接近等电位条件下，倒换母线改变接线方式

D．分、合一定长度母线，或电缆、绝缘套管和断路器的并联均压电容器中通过的小电容电流

E．分、合一定容量的空载变压器和电压互感器
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完形填空

Good evening, here is the weather report. The weather tomorrow is vrey changeable. It will be sunny in the morning in Beijing. But in the afternoon, the weather will be rainy. In Shanghai, skies will be clear and you can enjoy the bright sunshine in the moning. But it will be clould with no sunshine in the afternoon. In Shenzhen , there will be a light right rain with winds in the morning, and in the after noon it will rain heavily.

1.It will be sunny in the morning in Beijing and      .

2.It will       in Beijing and Shenzhen tomorrow.

3.If you want to go to the park tomorrow in Beijing, you’d better go there in the      .

4.It will be       in the aftenoon in Shanghai.

5.It will be rainy and       in Shenzhen tomorrow.
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