什么叫煤的结焦性?
参考答案:
煤在工业焦炉或模拟工业焦炉的炼焦条件下转变成焦炭的能力。
下列俗语中,属于形而上学的有
①滴水穿石 ②物极必反 ③刻舟求剑 ④断章取义 ⑤失败乃成功之母 ⑥墨守成规
A.①②④
B.①⑤⑥
C.③④⑥
D.②③④
--- Will you stay for meal as more friends will come for a gathering?
--- Sorry, _______. My brother is coming to see me.
A.I mustn’t
B.I can’t
C.I needn’t
D.I won’t