七情配伍中，可以降低药物功效的是
A．相须B．相使C．相杀D．相畏E．相恶
参考答案：E
Mrs. White isn’t here. She ______ London.
A. has been to B. has gone to C. went to
公共建筑应急照明配电箱供电范围不宜超过（）层。
A.8
B.10
C.12
D.16
