烧结机尾部的散料,大烟道的散状物料的运输,一般采用()。
A.水封拉链机
B.斗式提升机
C.皮带运输机
参考答案:A
—How many English words do you think I should know?
—As many as you ______. Then you will find reading quite easy.
A.will
B.must
C.can
D.might
关于CT显示主肺动脉窗下列哪项是错误的()
A.前方为升主动脉
B.内后方为气管
C.上界为主动脉弓下缘
D.下界为左肺动脉
E.不显示奇静脉弓