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【单选题】
劳动L的总产量下降时,()。
A.
平均产量AP L 递减
B.
平均产量AP L 为零
C.
边际产量MP L 为零
D.
边际产量MP L 为负
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【单选题】在Word文档编辑中,可以删除插入点前字符的按键是().
A.
Del
B.
Ctrl+Del
C.
Backspace
D.
Ctrl+Backspace
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【单选题】关于混凝土构件中纵向受拉钢筋的锚固,下列四条中哪一条是错误的 ( )
A.
混凝土强度等级越高，钢筋的锚固长度越短
B.
钢筋强度等级越高，锚固长度越长
C.
钢筋直径越粗，锚固长度越短
D.
光面钢筋比带肋钢筋的锚固长度长
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【单选题】There are______ people in his family．
A.
three
B.
four
C.
five
D.
six
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【单选题】I think that his advice is well worth __ .
A.
valuing
B.
to be valued
C.
of being valued
D.
values
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【单选题】在Word文档编辑中,可以删除插入点前字符的按键是( ).
A.
Ctrl+Backspace
B.
Backspace
C.
Del
D.
Ctrl+Del
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【单选题】When he heard the news, his heart ______ very fast.
A.
stroke
B.
beat
C.
knocked
D.
Jumped
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【单选题】在 Word 文档编辑中,可以删除插入点前字符的按键是( )
A.
Del
B.
Ctrl+Del
C.
Ctrl+ Backspace
D.
Backspace
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【单选题】在Word文档编辑中,可以删除插入点前字符的按键是( )。
A.
Enter
B.
Del
C.
Insert
D.
Backspace
查看完整题目与答案
【单选题】He gave in to ______and opened the letter addressed to his sister.
A.
curiosity
B.
feeling
C.
worry
D.
hope
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【单选题】Jack didn't like to ________ when he was a student．A． write compositions B． do his
A.
27． Jack didn't like to ________ when he was a student． A． write compositions
B.
do his homework
C.
do the housework
D.
learn science or biology
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【单选题】在Word文档编辑中,可以删除插入点前字符的按键是().
A.
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B.
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【单选题】关于混凝土构件中纵向受拉钢筋的锚固,下列四条中哪一条是错误的 ( )
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【单选题】There are______ people in his family．
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【单选题】I think that his advice is well worth __ .
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A.
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查看完整题目与答案
【单选题】When he heard the news, his heart ______ very fast.
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查看完整题目与答案
【单选题】在 Word 文档编辑中,可以删除插入点前字符的按键是( )
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【单选题】在Word文档编辑中,可以删除插入点前字符的按键是( )。
A.
Enter
B.
Del
C.
Insert
D.
Backspace
查看完整题目与答案
【单选题】He gave in to ______and opened the letter addressed to his sister.
A.
curiosity
B.
feeling
C.
worry
D.
hope
查看完整题目与答案
【单选题】Jack didn't like to ________ when he was a student．A． write compositions B． do his
A.
27． Jack didn't like to ________ when he was a student． A． write compositions
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do his homework
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do the housework
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learn science or biology
查看完整题目与答案