当按工程项目施工层次划分系统控制过程时,()的质量控制是最基本的质量控制。
A.检验批
B.分部工程
C.单位工程
D.施工作业过程
参考答案:D
A vessel aground may have negative GM since the().
A.decrease in KM is equal to the loss of draft
B.virtual rise of G is directly proportional to the remaining draft
C.lost buoyancy method is used to calculate KM, and KB is reduced
D.displa ement lost acts at the point where the ship is aground
防水屋面应做保护层,防水涂膜严禁在雨天、雪天施工,不宜施工的环境条件包括( )。
A.气温低于0℃或高于30℃时
B.气温低于0℃或高于35℃时
C.气温低于5℃或高于30℃时
D.气温低于5℃或高于35℃时