标准型、中间型、短头型圆锥破碎机主要区别在破碎机平行带，（）型平行带较长，（）型平行带较短，（）型平行带界于两者之间。
B
暂无解析
Modern____perhaps causes more problems than it solves.
Miss Green was____$100 for driving after drinking.
Bread and butter____liked by Westerners.
I don’t like _____ bills but when I do get them I like _____ them promptly.
____ you were busy, I wouldn’t have bothered you with questions.
As the pressure____, the liquid rock is forced up through channels in the resistant rock to the earth’s surface.
It was recommended that passengers _____ smoke during the flight.
The first step in the study of any language is observing and ____ precisely what happens when native speakers speak it.
The country’s chief exports are coal, cars and cotton goods, cars _____ the most important of these.
—Can you take the day off tomorrow ?
—Well， I‘all have to get（）from my boss.