下列选项中,导致制碱塔下部堵的原因是()。
A、出碱温度过高
B、反应区长时间上移
C、冷却速速过快
D、中段气进气量过大
参考答案:C
川芎、郁金、香附、紫苏等药均有下列何种作用()
A.活血
B.温经
C.行气
D.散寒
E.祛风
Make the words into sentences. 连词成句。
1. a let's game play
2. ready it's school get to time for
3. apples want some I buy to
4. every like a day I to bicycle ride
5. skip skipping we with rope Jenny's