生产过程的功能是创造物品的()
A.形质效用
B.时间效用
C.空间效用
D.社会效用
参考答案:A
-----The film is, I have to say, not a bit interesting.
------Why? It’s ______________ than the films I have ever seen.
A.far more interesting
B.much less interesting
C.no more interesting
D.any less interesting
在X.800中将安全攻击分为两类:被动攻击和______。