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【单选题】
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shift
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ctrl
C.
delete
D.
alt
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【简答题】【T18】 A. BADLY B. BE COINED AFTER C. REFUSE TO D. HORN 1782 TO 1792 A. HE TREATED HIS POOR TENANTS VERY【T13】______ B. WHO LIVED【T14】______ C. MEANS TO【T15】______ HAVE ANYTHING TO DO WITH SOMEBODY OR S...
【简答题】设nA 代表阿伏加德罗常数（NA ）的数值，下列说法正确的是
【单选题】—What time will Mr. Green be back to China? —Sorry. I don’t know ________.
A.
when did he go broad
B.
why he is going abroad
C.
how soon will he be back
D.
how long he will stay abroad
【简答题】【T13】 A.BADLY B.BE COINED AFTER C.REFUSE TO D.FROM 1782 TO 1792 A.HE TREATED HIS POOR TENANTS VERY【T13】______ B.WHO LIVED【T14】______ C.MEANS TO【T15】______HAVE ANYTHING TO DO WITH SOMEBODY OR SOMETHING...
【单选题】设N A 代表阿伏加德罗常数的值，下列说法不正确的是（ ）
A.
阿伏加德罗常数N A 是0.012kg l2 C中所含的原子数
B.
2g氢气所含氢原子数目为N A
C.
标准状况下，11.2LNH 3 所含的原子数目为0.5N A
D.
含71gNa 2 SO 4 的溶液中所含Na + 离子数目为N A
【单选题】设N A 代表阿伏加德罗常数的值，下列说法不正确的是（ ）
A.
28g氮气含有的原子数目为N A
B.
阿伏加德罗常数N A 在数值上与0.012kg l2 C中所含的原子数相等
C.
标况下，22.4LNH 3 所含的分子数目为N A
D.
1L1mol/LNaCl溶液中所含有的Na + 离子数目为N A
【简答题】【T13】 A. BADLY B. BE COINED AFTER C. REFUSE TO D. HORN 1782 TO 1792 A. HE TREATED HIS POOR TENANTS VERY【T13】______ B. WHO LIVED【T14】______ C. MEANS TO【T15】______ HAVE ANYTHING TO DO WITH SOMEBODY OR S...
【单选题】根据以下资料，回答13~16题。 The winter in Iceland has been one of the worst ever．An animal that was born in Iceland and just returned there has enjoyed the weather．Keiko is a killer whale who is now living in a ...
A.
die from the cold water in Iceland
B.
be happy to return home
C.
want to be free
D.
be less active
【单选题】设N A 代表阿伏加德罗常数的值，下列说法不正确的是( )。
A.
阿伏加德罗常数N A 是0.012kg 12 C中所含的原子数
B.
2g氢气所含氢原子数目为N A
C.
标况下，22.4L NH 3 所含的分子数目为N A
D.
1 L 1 mo1·L -1 NaCl溶液中所含有的Na + 离子数目为N A
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