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【判断题】
健全的法律不需要转化为人们内心自觉就能真正为人们所遵行。A.
正确
B.
错误
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反馈参考答案：
举一反三
【多选题】Which two statements about creating constraints are true?（）
A.
Constraint names must start with SYS_C
B.
All constraints must be defines at the column level.
C.
Constraints can be created after the table is created.
D.
Constraints can be created at the same time the table is created.
E.
Information about constraints is found in the VIEW_CONSTRAINTS dictionary view.
【多选题】Which two benefits are provided by creating VLANs?（）
A.
added security
B.
dedicated bandwidth
C.
provides segmentation
D.
allows switches to route traffic between subinterfaces
E.
contains collisions
【简答题】若根据选定的方向计算的电流值小于零,说明该段电流的实际方向与参考方向 。
【多选题】The blade has a groove on the bottom creating two distinct edges ——__________ and ___________.
A.
inside
B.
upside
C.
outside
D.
downside
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