有一砂浆用水泥、石灰、沙按1：2：4配比配合而成，这个砂浆叫（）
A、水泥砂浆
B、混合砂浆
C、石灰砂浆
D、勾缝砂浆
参考答案：C
--- I beg your pardon, but I didn’t quite catch you.
--- Oh, I ______ myself.
A．am talking to
B．talked about
C．have talked to
D．was talking to
经计算不需配筋的灌注桩，其桩身可按构造配筋。
