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【单选题】
缺铁性贫血在成年男性中最多见的原因是
A.
消化道慢性失血
B.
铁需要量增加
C.
失血过多
D.
铁摄入不足
E.
骨髓造血功能减退
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参考答案：
举一反三
【单选题】下列关于阿伏加德罗常数的说法中正确的是
A.
阿伏加德罗常数是12 g碳中所含的碳原子数
B.
阿伏加德罗常数是0.012 kg 12 C中所含的原子数
C.
阿伏加德罗常数是6.02×10 23
D.
阿伏加德罗常数的符号为N A ，近似为6.02×10 23
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【单选题】万用表黑色表笔应插入( )
A.
V
B.
A
C.
COM
查看完整题目与答案
【单选题】---We didn’t see him at the lecture yesterday. ---He it.
A.
mustn’t have attended
B.
couldn’t have attended
C.
wouldn’t have attended
D.
needn’t have attended 1n
查看完整题目与答案
【单选题】－We didn’t see him at the lecture yesterday． －He________it．A.would have not attended###SX
A.
-We didn’t see him at the lecture yesterday． -He________it． A.would have not attended
B.
can not have attended
C.
needn’t have attended
D.
mustn’t attend
查看完整题目与答案
【单选题】万用表黑色表笔插
A.
COL
B.
CON
C.
COM
D.
COR
查看完整题目与答案
【单选题】万用表黑色表笔应插入( )
A.
v
B.
A
C.
COM
查看完整题目与答案
【单选题】万用表黑色表笔插
A.
MOC
B.
COM
C.
MCO
D.
CMO
查看完整题目与答案
【单选题】“We didn’t see him at the lecture yesterday.”“He ______ it.”
A.
a. mustn’t attend
B.
b. cannot have attended
C.
c. would have not attended
D.
d. needn’t have attended
查看完整题目与答案
【单选题】“We didn’t see him at the exhibition yesterday.” “He ___it.”
A.
mustn’t visit
B.
can’t have visited
C.
should have gone to see
D.
may see
查看完整题目与答案
【单选题】“We didn’t see him at the lecture yesterday.” “He ( )it.”
A.
mustn’t attend
B.
cannot have attended
C.
would have not attended
D.
needn’t have attended
查看完整题目与答案
相关题目：
【单选题】下列关于阿伏加德罗常数的说法中正确的是
A.
阿伏加德罗常数是12 g碳中所含的碳原子数
B.
阿伏加德罗常数是0.012 kg 12 C中所含的原子数
C.
阿伏加德罗常数是6.02×10 23
D.
阿伏加德罗常数的符号为N A ，近似为6.02×10 23
查看完整题目与答案
【单选题】万用表黑色表笔应插入( )
A.
V
B.
A
C.
COM
查看完整题目与答案
【单选题】---We didn’t see him at the lecture yesterday. ---He it.
A.
mustn’t have attended
B.
couldn’t have attended
C.
wouldn’t have attended
D.
needn’t have attended 1n
查看完整题目与答案
【单选题】－We didn’t see him at the lecture yesterday． －He________it．A.would have not attended###SX
A.
-We didn’t see him at the lecture yesterday． -He________it． A.would have not attended
B.
can not have attended
C.
needn’t have attended
D.
mustn’t attend
查看完整题目与答案
【单选题】万用表黑色表笔插
A.
COL
B.
CON
C.
COM
D.
COR
查看完整题目与答案
【单选题】万用表黑色表笔应插入( )
A.
v
B.
A
C.
COM
查看完整题目与答案
【单选题】万用表黑色表笔插
A.
MOC
B.
COM
C.
MCO
D.
CMO
查看完整题目与答案
【单选题】“We didn’t see him at the lecture yesterday.”“He ______ it.”
A.
a. mustn’t attend
B.
b. cannot have attended
C.
c. would have not attended
D.
d. needn’t have attended
查看完整题目与答案
【单选题】“We didn’t see him at the exhibition yesterday.” “He ___it.”
A.
mustn’t visit
B.
can’t have visited
C.
should have gone to see
D.
may see
查看完整题目与答案
【单选题】“We didn’t see him at the lecture yesterday.” “He ( )it.”
A.
mustn’t attend
B.
cannot have attended
C.
would have not attended
D.
needn’t have attended
查看完整题目与答案
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