“老年慎泻,少年慎补”的用药原则,其依据是()
A.因人制宜
B.因地制宜
C.因时制宜
D.标本同治
E.调整阴阳
参考答案:A
The time he has devoted in the past 10 years____ the disabled is now considered ____ of great value.[ ]
A. to helping;to be
B. to help;being
C. to help;to be
D. helping;being
在风力超过()级时禁止露天进行焊接或气割。但风力在()级以下()级以上进行露天焊接或气割时,必须搭设挡风屏以防火星飞溅引起火灾。