在低压配电中,易燃、易爆场所应采用()
A.瓷柱、瓷绝缘子布线
B.塑料护套线
C.塑料管线
D.钢管线
参考答案:D
Tom takes a(n)________view of passing the test next time although he has failed in the test for three times.[ ]
A. happy
B. optimistic
C. pessimistic
D. negative
某男,66岁,腰部冷痛沉重,每于阴雨天或天气骤冷则疼痛加剧,此因()
A.瘀血阻络
B.肾阳虚
C.寒湿困阻
D.结石阻滞
E.带脉损伤