保护接地是为了避免人身触电事故的发生。()
参考答案:对
—Are you going to take part in the speech competition?
—_____.It’s too good a chance to miss.[ ]
A. No problem
B. Thanks a lot
C. Never mind
D. That’s for sure
皮质激素在治疗面神经炎的作用是()。
A.抑制免疫
B.抗病毒
C.抗过敏
D.抗细菌
E.减轻面神经水肿