正常操作过程中,常顶压力不变,常顶温度升高,则()。
A.常顶干点升高
B.常顶干点降低
C.常顶干点不变
D.常顶初馏点降低
参考答案:A
It's always difficult being in a foreign country, _____ when you can't speak the language. [ ]
A. extremely
B. naturally
C. basically
D. especially
在《超越IQ》一书中提出智力的三元理论的是()
A、皮亚杰
B、加德纳
C、斯腾伯格
D、戴斯