钢管水浸探伤时,水中加入适量润湿剂的目的是()
A、调节水的粘度
B、消除水中气泡
C、提高水的浸润能力
D、防止水的混浊
参考答案:C
— Will you give this message to Mr. White, please?
— Sorry, I can't. He ____. [ ]
A. doesn't any more work here
B. doesn't any longer work here
C. doesn't work any more here
D. doesn't work here any longer
下列哪一项具有学生行为问题的特征( )
A.与社会行为规范不相符合
B.不积极参加班级组织的志愿者活动
C.爱与人争辨
D.体育成绩达标难
E.主课考试成绩在均分以下