相同旋风除尘器串联使用时,所净化的风量为各旋风除尘器净化的风量的()。
A.总和
B.总乘积
C.1个旋风除尘器净化的风量
D.1个旋风除尘器净化的风量
参考答案:C
注册安全工程师执业资格注册有效期一般为()年。
A.1
B.2
C.3
D.4
267. After throwing the lamp against the wall and turning over the dining room table, she deeply ______ her temper.
A.regretted losing
B.regretted being lost
C.regretted to lose
D.regretted to be lost