禹余粮的功效是()。
A.涩肠止泻
B.收敛止血
C.止带
D.敛肺止汗
E.补肾固精
参考答案:A, B, C
.
---- My watch is out of order.
---- Then why don’t you have ____?
A.repaired it
B.to repair it
C.it repaired
D.it to be repaired
掘进中总风压通风方法可分为哪四种?