影响石膏凝固速度的因素不包括（）
A.熟石膏粉与水调和的比例
B.搅拌时间
C.搅拌时的室温
D.熟石膏的性能
E.以上均不是
参考答案：E
It was in the factory ________ TV sets were produced ________ we met for the first time. [ ]
A. which, where
B. that, which
C. that, that
D. where, that
