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【单选题】
关于红细胞沉降率测定不正确的是A.
不能用于无症状人群的筛查
B.
随年龄增加，红细胞沉降率减慢
C.
红细胞沉降率增快无特异性，应与临床资料相结合
D.
任何一种发生红细胞沉降率增快的疾病，在治疗期间，以定期测定红细胞沉降率，可以帮助推断病变的发展
E.
若外科手术l后，出现红细胞沉降率增 快，提示发生并发症
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【简答题】用定义求下列函数的拉氏变换： (1)f(t)=e -2t (2)lf(t)=2t
【单选题】Why isnt it important what McKay sees in the machine?
A.
He doesn't like the machine.
B.
An eye chart is better.
C.
It's what the machine sees in him that is important.
D.
The prototype doesn't work very well.
【单选题】—We've waited for the two singers for two hours. Will they be able to come here? —I'm afraid ____ of them will come today. [ ]
A.
neither
B.
either
C.
both
D.
none
【单选题】—I've not finished with my dinner yet. —But our friends______for us.
A.
waited
B.
to be waited
C.
waiting
D.
are waiting
【简答题】用定义求下列函数的拉氏变换： (1)f(t)=e -2t (2)lf(t)=2t
【单选题】why didn't people in Bangladesh use a machine to replace the woman ?
A.
because they couldn't afford to buy a machine
B.
because they didin't know how to use a machine
C.
because the woman needed the work to support her family
D.
because the work could only be done manually
【单选题】( 浙江卷 )6. This machine _______. It hasn’t worked foryears.
A.
didn’t work
B.
wasn’t working
C.
doesn’twork
D.
isn’t working
【单选题】I'm sorry to_____you while you’re working，but I've got a question to ask you. ·
A.
distress
B.
bother
C.
disrupt
D.
interfere
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