在其他运行参数不变的工况下,压缩机余隙越大,排气()。
参考答案:温度越高
木炭与氢气的化学性质的相似之处是 ①有可燃性②有还原性③有氧化性④都是单质⑤都难溶于水[ ]
A.①②④⑤
B.①②
C.③
D.①②③④
Pirates of the Caribbean is one of ___ films that I have ever seen.[ ]
A. very exciting
B. more exciting
C. much more exciting
D. the most exciting