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【单选题】
what is the emission designation foA.
FI
B.
F3C
C.
J2B
D.
F3
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反馈参考答案：
举一反三
【单选题】To those unused to the cash register, what does it look like?
A.
It looks like a telephone.
B.
It looks like the control panel of an aircraft.
C.
It looks like a typing machine.
D.
It looks like a radio.
【单选题】What should Mr. Porter do with the unused handbooks?
A.
Discard them in no time
B.
Keep them for the next workshop
C.
Return them by mail
D.
Sell them to others
【单选题】(2005全国联赛,05)在生物信息传递中,下列哪一种还没有实验证据:
A.
DNA→RNA
B.
RNA→蛋白质
C.
RNA→DNA
D.
蛋白质→DNA
E.
上述四种
【单选题】What can we do to avoid the waste of paper?
A.
Learn to make notepads from unused sides of paper.
B.
Cut down on paper consumption.
C.
Teach children not to litter.
D.
Stop using paper towels.
【简答题】What indicator should be used for the titration of 0.10 M KH 2 BO 3 with 0.10 M HCl?
【简答题】5 What is an unused book lying on a shelf compared with?
【单选题】What does the speaker say about sick leave?
A.
Unused days will be lost.
B.
The number of days will increase.
C.
They will be taken from vacation days.
D.
Unused days can be used for unpaid vacation.
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