隔离开关只能用来接通或断开()电流电路。
A、无通路
B、异常
C、正常负荷
D、无负荷
参考答案:D
— I was awarded a prize for doing volunteer work.
— _____. [ ]
A. You've got it
B. You deserve it
C. Good idea
D. Here we are
下列不符合皮样囊肿的是
A.是一种先天性疾病,起源于外胚叶
B.一般在出生时或5岁以内发生
C.可发生癌变
D.通常为单发,囊肿位于真皮内,囊壁与表皮囊肿的囊壁相同
E.病理表现与粟丘疹不同