叶丝增温增湿机来料流量、水分波动会引起出料温度波动,要控制来料流量和温度保持稳定。
参考答案:对
A. which
B. who
C. that
D. What
Can you imagine ______ when she hears the terrible news? [ ]
A. what happens
B. what will happen
C. what does it happen
D. what is happening