发展和推广适合国内煤种的流化床燃烧、无烟燃烧和气化、液化等洁净煤技术,提高煤炭()。
A.燃烧率
B.燃尽率
C.利用效率
参考答案:C
根据句意,在答题卡标有题号的横线上,写出括号内所给单词的适当形式。
小题1:She looks much _______ (health)than she used to be because she takes exercise every day.
小题2:Our English teacher has offered us some useful _______________ (suggest). I think they will help us a lot in our English study.
小题3:Please tell me the (lady) telephone numbers, I want to interview them.
小题4:You can see the _______( happy) on her face because she can't find her lovely dog.
灭火时,如果瓦斯达到2%并且仍继续增加,救护队指挥员必须立即将人员撤到安全地点。