下列何因素与癫狂发生关系不密切
A.七情内伤
B.感受外邪
C.饮食失节
D.体虚劳倦
E.先天不足
参考答案:B,D
(2012·辽宁)The newcomer went to the library the other day and searched for ________ he could find about Mark Twain.
A.wherever
B.however
C.whatever
D.whichever
低压侧工作接地电阻值不宜超过()Ω。
A、4
B、10
C、20
D、30