在提升管出口快速分离器中,()使气固分离的作用原理是一样的。
A.伞帽和倒L型弯头
B.倒L型弯头和T型弯头
C.伞帽和T型弯头
D.倒L型弯头和粗旋风分离器
参考答案:B
I've been writing this report ________ for the last two weeks, but it has to be handed in tomorrow.[ ]
A. finally
B. immediately
C. occasionally
D. certainly
是政治家同时也是文学家,属于唐宋八大家的改革家是()
A.王安石
B.张居正
C.范仲淹
D.耶律楚材