用导入空气的方法来降低循环气体中的可燃成分,则导入空气量要比输入氮气量()。
参考答案:多
根据中文提示,用词组的适当形式填空,每空一词。(每小题1分,共5分)
小题1:The policeman asked him what ___________ _____________(发生) him
小题2:It seems difficult for us to (切碎) the onions.
小题3:How to design our uniforms shouldn’t only (取决于) what we likes and dislikes.
小题4:Could you tell me whether this pair of shoes(由…制成的)of leather?
小题5:The newspaper China Daily(值得) reading..
材料()的能力称为热传导率,或称热导率。
A、与物体接触
B、间接传导热量
C、燃点
D、直接传导热量