甲烷化炉入口二氧化碳含量设计值是()PPM
A.1800
B.1500
C.800
D.400
参考答案:C
He was hoping to go abroad but his parents_________ that they won’t support him unless he can borrow money from the bank.
A.were deciding
B.decided
C.have decided
D.will decide
连接封面和内页,目的在于封面和内页牢固不脱离,常采用抽象的肌理效果制作的版面叫()
A.封面
B.扉页
C.环衬
D.目录