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【简答题】
十进制数89用二进制数表示是( )
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举一反三
【单选题】It appears to her _______ he wants to teach us all he has.
A.
that
B.
which
C.
why
D.
what
【单选题】尖晶石MgAl 2 O 4 结构中,正负离子配位数Ma:Al:O=4:6:4,其中与每个O 2- 配位的正离子为 ( )
A.
3个Mg 2+ ,1个Al 3+
B.
1个Mg 2+ ,3个Al 3+
C.
2个Mg 2+ ,2个Al 3+
D.
4个Mg 2+
E.
4个Al 3+
【单选题】尖晶石MgAl 2 O 4 结构中,正、负离子配位数Mg:Al:O=4:6:4,其中与每个O 2- 配位的正离子为:( )
A.
3个Mg 2+ 1个Al 3+
B.
1个Mg 2+ 3个Al 3+
C.
2个Mg 2+ 2个Al 3+
D.
4个Mg 2+
E.
4个Al 3+ 第三章 晶体结构缺陷
【单选题】Our monitor, ______ it clear to us that he didn’t want to waste time playing computer s, left the Internet bar quickly.
A.
made
B.
having made
C.
make
D.
Had made
【简答题】It
_____ to her that he wants to teach us all he has.A. is B. appear C. appears D. was
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