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【单选题】
假设已使用下列变量声明语句: Dim date_1 As Date 则为变量 date_1 正确赋值的语句是( )。A.
m date_1 As Date
B.
变量date_1正确赋值的语句是( )。
C.
date_1=date(“1/1/2000”)
D.
date_1=#1/1/2000#
E.
date_1=1/1/2000
F.
date_1=”#1/1/2000#”
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【简答题】联结三个刚片的铰结点，相当的约束个数为____个。
【单选题】As we all know, the 29th Olympic s _____ in Beijing in 2008. [ ]
A.
were held
B.
will hold
C.
is to hold
D.
are hold
【多选题】一般选用下列点、线或面作为尺寸基准。 (1)零件的对称平面; (2)回转体的轴线; (3)零件上较大的加工面,如底面、端面,特别是与其他零件的结合面。
A.
零件的对称面
B.
回转体的轴线
C.
零件上较大的加工面
D.
轴肩的侧面
【简答题】As we all know, eating habits are different in different countries. The Chinese have a . “Eat good things for breakfast, eat a big meal for lunch, but eat at dinner.” Many Americans agree that one sho...
【简答题】完形填空。 Do you know how to study better and make your study more effective (有效的)?We all know that Chinese students usually study very hard for long 1 .This is very good but it doesn't 2 a lot,for an eff...
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