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【简答题】
若A1和A2两表以共同的“”字段建立联接查询,有8条相同的记录,各自有2条不相同的记录。左联接有____条记录。
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反馈参考答案：
举一反三
【单选题】The product was inspected and quarantined by the competent authority, in accordance ( the relevant regulations.
A.
on
B.
to
C.
for
D.
with
【简答题】A．intelt B．competitive C．capable D．competent
【单选题】The competent educational research ______.
A.
does not have the same standards with competent scientific research
B.
is a part-time activity of education
C.
should have standards which require different duties
D.
produces the same influence with scientific research
【简答题】网络安全完整性的主要防范措施是____与____。
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