溅渣护炉
参考答案:
利用MgO含量达到饱和或过饱和的炼钢终点渣,通过高压氮气的吹溅,使其在炉衬表面形成高熔点的熔渣层,并与炉衬很好的粘结附着,称为溅渣护炉。
It was in the university _______ they fell in love with each other, _____ brought both of them happiness.
A.when, which
B.that , which
C.where, that
D.which , who
根据句意, 用括号内所给单词的适当形式填空。
小题1:A person who does not like fishing usually appears __________ (patient) in doing his work.
小题2:__________ (hope), the Chinese government can control the increasing of housing price.
小题3:After several lengthy ______________(discuss) , they decided to leave.
小题4:Many people post photos of ________(they) on Facebook. They get to know each other on it.