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问题 单项选择题

一辆汽车沿平直公路行驶，开始以20m/s的速度行驶了全程的1/4，接着以速度v行驶其余的3/4的路程，已知全程的平均速度为16m/s，则v等于（）

A.18m/s

B.36m/s

C.15m/s

D.17.1m/s

答案

参考答案：C

单项选择题

对装备定距螺旋桨的活塞发动机，通常用来反映功率的仪表是（）

A.进气压力表

B.转速表

C.燃油流量表
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单项选择题

The government is to ban payments to witnesses by newspapers seeking to buy up people involved in prominent cases (21) the trial of Rosemary West.
In a significant (22) of legal controls over the press, Lord Irvine, the Lord Chancellor, will introduce a (23) bill that will propose making payments to witnesses (24) and will strictly control the amount of (25) that can be given to a case (26) a trial begins
In a letter to Gerald Kaufman, chairman of the House of Commons media select committee. Lord Irvine said he (27) with a committee report this year which said that self regulation did not (28) sufficient control.
(29) of the letter came two days after Lord Irvine caused a (30) of media protest when he said the (31) of privacy controls contained in European legislation would be left to judges (32) to Parliament.
The Lord Chancellor said introduction of the Human Rights Bill, which (33) the European Convention on Human Rights legally (34) in Britain, laid down that everybody was (35) to privacy and that public figures could go to court to protect themselves and their families.

A. sketch B. roughC. preliminaryD. draft
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