预防煤尘爆炸的措施()。
A.降尘
B.防止引燃
C.隔爆
D.加强通风
参考答案:A, B, C
In our town, wood can ___________ a fire.
A.be used to make
B.be used to making
C.use to make
D.used to making
喷锚支护应符合哪些规定?