关于环氧粉末内涂防腐，（）是错误的。
A.涂层的附着力强
B.抗阴极剥离能力稍差
C.表面光滑，防止微生物滋生
D.增加流量，节省能源
参考答案：B
- Didn't you see the sign "No Fishing!" on the right?
- Sorry, I didn't. But now I know fishing_______ here.
A．wasn't allowed
B．isn't allowed
C．won't allow
D．doesn't allow
煤层内，原则上禁止探放水压高于1.5MPa的充水断层水、含水层水及陷落柱水等。（）
