钢筋混凝土预制板在安装前,应先在墙上铺设( ),俗称坐浆。
A.水泥砂浆 B.石灰砂浆 C.混合砂浆 D.建筑砂浆
参考答案:A
They are talking about the movie __they watched yesterday
A./
B.whose
C.what
D.whom
软组织急性扭伤24h内首选的物理治疗是
A.超短波
B.热敷
C.冷敷
D.调制中频电
E.红外线