5000×35×2=6000(件)
答:这个月实际生产6000件.
I have no doubt in my mind______ they will be glad to see me.
A.if
B.whether
C.that
D.about
砌筑砂浆的配合比应采用下列何者正确?()
A.质量比
B.体积比
C.水灰比
D.质量比或体积比