题目内容
低压开关可以用来直接控制任何容量的电动机启动、停止和正反转。
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刀开关又简称闸刀开关，刀开关在分断有负载电路时，其触刀与静夹座间会立即产生电弧。
所有刀开关都带有短路保护装置。
HK系列刀开关不宜分断有负载的电路。
Review the words and phrases given here. Choose the best one for each sentence and write it down in the brackets with its correct form.[approach; balance; clean up; diet; wreck; do with; principle; weekly; discard; handle]1) It was already a ( ) when two weeks later the police found his stolen car and he had to buy a new one.2) With great patience, the clerk showed the elderly lady how to check the ( ) in her bank account on an ATM.3) If you look out of the window on the left side of the bus, you'll see that we're now ( ) the Tower of London.4) There'll certainly be some problems, but nothing that you can't ( ).5) People who ( ) litter in the streets should be fined heavily.6) During those difficult years, the family lived almost entirely on a ( ) of cabbages.7) What are we going to ( ) the food left over from the party?8) We'll go out as soon as l've ( ) the kitchen.9) For women lawyers in the United States, their () earnings are on the average much less than those of males lawyers.10) I won't get involved in a deal like this --- it's against all my ( ).
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