筒式反应器每小时进料6吨，经过反应后生成MTBE2.3吨，有（）反应

搜题请搜索小程序“爱下问搜题”

问题单项选择题

筒式反应器每小时进料6吨，经过反应后生成MTBE2.3吨，有（）反应热量。（MTBE分子量为88，MTBE反应放热量为8.7大卡/摩尔）

A、22.7万大卡/小时

B、21.7万大卡/小时

C、24.7万大卡/小时

D、23.7万大卡/小时

答案

参考答案：A

选择题

— Whom did you ________ the wall?

— Jack. There________ masses of things for him to do, but he managed to finish the work as required.[ ]

A. have painted; was

B. have paint; were

C. have to paint; were

D. have paint; was

单项选择题

有点状出血现象的疾病是（）。

A.寻常型银屑病

B.脓疱型银屑病

C.急性湿疹

D.慢性湿疹

E.皮肤瘙痒症