在电场灰斗中,一般应保持()高度的储灰,以免造成二次飞扬,降低除尘效率。
A.1/2;
B.1/3;
C.1/4;
D.零。
参考答案:B
He has learned , no matter what happens and how bad seems today, life goes on and it will be better tomorrow.
A.that; it
B.it; that
C.it; it
D.that; that
荆芥的功效是( )
A.消疮止泻,透疹止血
B.发表止痉,消疮止泻
C.发表止痛,利水消肿
D.祛风解表,透疹消疮,止血止痉
E.发表通窍,胜湿止痛,止血