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【单选题】
食品工业中不常用于食品灭菌的灭菌有：A.
超高温瞬时灭菌法
B.
火焰灭菌法
C.
巴氏灭菌法
D.
高压蒸汽灭菌法
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反馈参考答案：
举一反三
【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】Excuse me, but may I ask you _____? [ ]
A.
what business are you in
B.
what business you're in
C.
in what business are you
D.
are you in what business
【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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