油的机械净化处理方法有()。
①澄清②压力过滤③真空过滤④再生
A、①②③
B、②③④
C、①②④
D、①②③④
参考答案:A
— Do you think the thief entered through the garage door?
— No. If he had. I don't believe he _____ the living room window. [ ]
A. would have broken
B. had broken
C. would break
D. broke
下列关于备兑权证的表述,正确的有( )。
A.备兑权证通常会增加股份公司的股本
B.备兑权证通常不会增加股份公司的股本
C.备兑权证所认兑的股票是新发行的股票
D.备兑权证所认兑的股票是已在市场上流通的股票