人体在高频电磁场的作用下，会出现头晕、乏力、记忆力减退、失眠等神经系统症状，这种对人体的损害称为（）。
参考答案：电磁场生理伤害
-Don't you think it necessary that he_________ to Miami but to New York?
-I agree, but the problem is_________ he has refused to. [ ]
A. will not be sent; that
B. not be sent; that
C. should not be sent;what
D. should not send ; what
公务礼仪包含哪些内容？
