分散流细分为泡流和环雾流,在()气流量和()液流量下将出现环雾流。
A、高、高
B、高、低
C、低、高
D、低、低
参考答案:B
After the discussion, the students asked their teacher next. [ ]
A. which to do
B. what to do
C. how to do
D. when to do
过氧化醇、过氧化醚、过氧化酮