问题
单项选择题
当圆周速度v≤12～15m/s³的齿轮减速器广泛采用（），自然冷却。
A、油池润滑
B、飞溅润滑
C、压力强制润滑
D、喷油润滑
答案
参考答案：A
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当圆周速度v≤12～15m/s³的齿轮减速器广泛采用（），自然冷却。
A、油池润滑
B、飞溅润滑
C、压力强制润滑
D、喷油润滑
参考答案：A
阅读下列短文，从每小题所给的A、B、C、D四个选项中选出最佳选项。 Mr Black works in a hospital (医院). As a good 1 , the people in the town like him. He’s often 2 to the patients (病人) and looks them over carefully. 3 he’s always busy and has little time to rest. One morning Mr Black got to the hospital and saw there was a fat woman in the 4 . He called her into his office and asked, “ 5 , madam ?” “It was my birthday yesterday, sir”, said the woman. “My husband gave me a 6 . But I couldn’t push my way in (挤进) it.” “ 7 , madam,” said Mr Black, “You must lose some weight (减肥). You’ll be able to 8 your coat, if you do all that I say.” “You’re 9 , sir,” said the rich woman. “He bought me not a coat, but an expensive 10 .”
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