问题
多项选择题
机床旋转部件的危害因素有（）
A.对向旋转部件的咬合
B.飞出的装夹具和机械部件
C.旋转部件和成切线运动部件面的咬合
D.旋转轴
E.旋转部件和固定部件的咬合
答案
参考答案：A, C, D, E
搜题请搜索小程序“爱下问搜题”
机床旋转部件的危害因素有（）
A.对向旋转部件的咬合
B.飞出的装夹具和机械部件
C.旋转部件和成切线运动部件面的咬合
D.旋转轴
E.旋转部件和固定部件的咬合
参考答案：A, C, D, E
阅读下面短文, 从短文后所给各题的A、B、C、D四个选项中，选出可以填入空白的最佳选项。 The Voice of America began during the World WarⅡ. When Germany was broadcasting a radio program to get international , American officials believed they should the German broadcast with words that they thought were the facts of world events. The first VOA news report began with words in . “The may be good or bad, but we shall tell you the truth.” Within a week, other VOA were broadcasting in Italian, French and English. After the World WarⅡended in 1945, some Americans felt VOA’s had to be changed, the Soviet Union became enemy of America．They wanted to Soviet listeners. Then VOA began broadcasting in Russian. In the early years VOA began adding something new to its broadcast that was “ Music USA”. Another new idea came along in 1959．VOA knew that many listeners did not know English to completely understand its English broadcast. So VOA a simpler kind of English, uses about 1,500 words and is spoken of course, it is special English. In the of most VOA listeners, the most program is the news report. News from around the world into the VOA news rooms in Washington 24 hours a day. It comes from VOA reporters in cities and also from other like BBC．VOA writers and editors use these materials to news reports, which are being broadcast in 43 languages.
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