以下不是药疹诊断依据的是 ()
A.明确用药史
B.瘙痒明显
C.无潜伏期
D.斑贴试验
参考答案:C
在PSA工艺过程中,吹扫压力越低,氢的回收率越高,吸附剂()得越好,但吹扫压力受工艺条件的限制。
— Do you think the rain will stop tomorrow?
—___________. It has rained for a whole week. It’s too wet everywhere.
A.I hope not
B.I’m sure it is
C.I’m afraid so
D.I hope so