催化剂的熔流指数低于0.3时,终产物上()的危险性会增大。
A.雾度超标
B.熔流指数超标
C.生成鱼眼
D.开口性差
参考答案:A
“马歇尔计划”的根本目的是[ ]
A.是“金元外交”的延续
B.以经济手段控制西欧
C.扶持东欧各国摆脱并对抗苏联
D.帮助欧洲复兴经济
Victor apologized for ____ to inform me of the change in the plan. [ ]
A. his being not able
B. him not to be able
C. his not being able
D. him to be not able