题目内容

用船吊吊卸重大件时,船舶横倾角最大的时刻为()。

A. 吊杆头的高度最大时
B. 货物距基线的高度最大时
C. 货物刚吊起之时
D. 货物将要落地之时

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地基施工结束后,就可立即进行有关检测和质量验收。

A. 正确
B. 错误

结婚当天新娘妆的头饰一般有:()、()、珍珠等。

电厂减少散热损失主要是减少设备外表面与空气间的换热系数,通常利用增加()厚度的方法来增大热阻。

A. 保温层;
B. 绝缘层;
C. 钢管壁;
D. 厂房墙壁。

You execute the following command to audit the database activities: SQL> AUDIT DROP ANY TABLE BY scott BY SESSION WHENEVER SUCCESSFUL; What is the effect of this command?()

A. One audit record is created for the whole session if user SCOTT successfully drops one or more tables in his session.
B. One audit record is created for every session when any user successfully drops a table owned by SCOT
C. One audit record is created for each successful DROP TABLE command executed by any user to drop tables owned by SCOT
D. One audit record is generated for the session when SCOTT grants the DROP ANY TABLE privilege to other users in his session.
E. One audit record is created for each successful DROP TABLE command executed in the session of SCOT

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