以下修补材料需要使用烘干设备的是()
A、水泥砂浆修补
B、喷浆修补
C、压缩混凝土修
D、环氧混凝土
参考答案:D
They held a meeting ____ they could hear everyone’s idea.
A.even if
B.now that
C.in case
D.so that
液化过程中必须控制液化率,为什么?