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问题 填空题

电磁打点计时器时使用______（交流电或直流电）为电源的计时仪器，其工作电压为______；若使用的电源频率变为100Hz，则纸袋上相邻两点间的时间为______s．

答案

电磁打点计时器是使用交流电源的计时仪器，工作电压4V～6V，当电源的频率为100Hz时，它每隔0.01s打一次点．

故答案为：交流电；4V～6V；  0.01 s

单项选择题

The government is to ban payments to witnesses by newspapers seeking to buy up people involved in prominent cases such as the trial of Rosemary West.

In a significant (51) of legal controls over the press. Lord Irvine, the Lord Chancellor, will introduce a (52) bill that will propose making payments to witnesses (53) and will strictly control the amount of (54) that can be given to a case before a trial begins.

In a letter to Gerald Kaufman, chairman of the House of Commons media select committee. Lord Irvine said he (55) with a committee report this year which said that self regulation did not (56) sufficient control.

(57) of the letter came two days after Lord Irvine caused a (58) of media protest when he said the (59) of privacy controls contained in European legislation would be left to judges (60) to Parliament.

58().

A.storm 

B.rage 

C.flare 

D.flash
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填空题

汽车电子控制悬架系统应用的开关有（）、（）、（）、（）等。
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