问题
多项选择题
对机械设备安全防护罩的技术要求不正确的是( )。
A．只要操作工可能触及的活动部件，在防护罩没有闭合前，活动部件就不可能运转
B．防护罩与活动部件有足够的间隙，避免防护罩和活动部件之间的任何接触
C．防护罩应牢固地固定在设备或基础上，拆卸、调节时可以直接用手拆除
D．不影响操作，在正常操作或维护保养时不需拆卸防护罩
答案
参考答案：C
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对机械设备安全防护罩的技术要求不正确的是( )。
A．只要操作工可能触及的活动部件，在防护罩没有闭合前，活动部件就不可能运转
B．防护罩与活动部件有足够的间隙，避免防护罩和活动部件之间的任何接触
C．防护罩应牢固地固定在设备或基础上，拆卸、调节时可以直接用手拆除
D．不影响操作，在正常操作或维护保养时不需拆卸防护罩
参考答案：C
| 阅读理解。 | |
"Stick out (伸出) your tongue," the doctor said. The man stuck out his tongue and the doctor looked at it 1 . "OK. You can put your tongue 2 in now," the doctor said. "It's clear what's wrong with you. You need more exercise." "But, doctor," the man said. "I don't think..." "Don't tell me what you think," the doctor said. "I'm the doctor, not you. I know what you need. I see hundreds of people like you. 3 of them get any exercise. They sit in offices all day and in front of the TV in the evening. What you need is to walk quickly for at 4 20 minutes a day." "Doctor, you don't understand," the patient said. "I..." "I don't want to hear any 5 the doctor said."You must find time for exercise. If you don't, you will get fat and have health problems when you are 6 ." "But I walk every day," the patient said. "Oh, yes. And I know what kind of walking that is. You walk a few feet to the train station from your house, a few more feet from your 7 to a restaurant for lunch and back. That's not real walking. I'm 8 about a walk in the park for twenty minutes every day." "Will you listen to me, doctor?" the patient 9 getting angry with the doctor who thought he knew everything. "I'm a postman," the patient went on, " 10 I walk for seven hours every day!" For a moment the doctor said nothing, then he said quietly, "Stick your tongue out again, will you?" |
