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【单选题】
气门间隙的作用是什么?
A.
为配气机构零部件热胀冷缩留有余地
B.
留有间隙便于装配
C.
有间隙工作时产生的声音可以用来判断是否有故障
D.
设计加工精度无法达到0间隙
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【单选题】听力原文:W: Hello. May I speak to Mr. Josh Cooke, please? M: Speaking. W: This is Rebecca Carter of Yours Magazine. M: What can I do for you, Miss Carter? W: [23] There'll be an issue next month introduci...
A.
Ask for a job interview.
B.
Talk about the arrangement of a news conference.
C.
Make a discussion about the new book.
D.
Make an appointment with the man.
【单选题】“肖像”中的“肖”的正确读音是( )
A.
xiāo
B.
xiào
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A.
She's in a meeting.
B.
She's out of the office.
C.
She's talking with another customer.
D.
She's avoiding the caller.
【单选题】给瘫痪病人留置导尿管,下列哪项是不正确的:
A.
留置的导尿管应4小时开放一次
B.
每周用药物冲洗膀胱2次,以预防感染
C.
鼓励病人多饮水,以自行冲洗膀胱
D.
更换导尿管,中间应间歇4-5小时
E.
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【单选题】听力原文:W: May I help you? M: Yes, [22] my wife and I want to take a vacation this winter to some place warmer. W: I understand. How much time do you have? M: Only a week between Christmas and the New Ye...
A.
In a department store.
B.
At a travel agency.
C.
At an airport ticket counter.
D.
At a hotel.
【单选题】“肖像”的正确读音是
A.
xiāoxiàng
B.
xiàoxiàng
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【单选题】精馏塔在xF、q、R一定下操作时,将加料口向上移动一层塔板,此时塔顶产品浓度xD将( ),塔底产品浓度xW将( )。
A.
变大 变小
B.
变大 变大
C.
变小 变大
D.
变小 变小
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