军团菌的最适生长培养基是（）
A.EMB平板
B.麦康凯平板
C.BCYEa
D.巧克力平板
E.血平板
参考答案：C
A few minutes earlier, and you would have seen the NBA star. But you ________.
A．won't come
B．don't come
C．didn't come
D．haven't come
下列有关聚羧酸系高性能减水剂混凝土性能指标FHNII正确的是（）
A、减水剂/%不小于65
B、减水剂/%不小于10
C、减水剂/%不小于15
D、减水剂/%不小于18
