问题
单项选择题
在其他条件不变的情况下，增加轧辊工作直径将使咬入角（）。
A、减小
B、增大
C、不变
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
在其他条件不变的情况下，增加轧辊工作直径将使咬入角（）。
A、减小
B、增大
C、不变
参考答案：A
Why are you always tired, do you know? First, if(如果) we can’t 31 well, we will(将) be tired. But we are often too 32 . We can’t finish our work in the day 33 we have to do it at night. We go to bed 34 and we get up early in the morning for school or work. Most people need at least(至少) eight 35 or some more. If we sleep for only five or six hours a night, we will be tired. Second, when we are ill, we will be tired. But we don’t know we are ill. So if you are always tired, maybe you are not so 36 . You’d better go to see a 37 . Third, maybe you eat 38 food, like hamburgers, meat, chocolate or coffee. If you are ill and tired after eating some food, please don’t eat it 39 to see if you are well. At last, if the air around you isn’t nice and clean, you will feel tired. So please open your windows often or go out for a walk and you will feel 40 .
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