A:盛行下沉气流
B:盛行上升气流
C:气流呈逆时针方向旋转
D:气流呈顺时针方向旋转
工业生产纯碱的工艺流程示意图如下,关于如图所示4个步骤说法有错误的是( )
在标准状况下,将aLNH3完全溶于水得到V mL氨水,溶液的密度为ρg/cm3,溶质的质量分数为ω,溶质的物质的量浓度为cmol/L.下列叙述中正确的是( )
Ben's vacation plans
First:
He will go to a(n) ____ place to relax himself.
He will stay there for____.
Next:
He will watch movies and videos with ____.
Then:
He will ____with his mother.
At last: He will stay at home to finish ____.