环氧乙烷水合反应器进料中环氧乙烷浓度降低的标志是()。
A、反应器入口温度降低
B、反应器温度梯度变化减小
C、中点温度上升
D、反应器温度梯度变化增大
参考答案:B
— It seems that she doesn't like the dinner very much.
—______. In fact, she's been on a diet following the doctor's advice.[ ]
A. You're right
B. So she does
C. Never mind
D. Not really.
中国人自己创办的第一份近代报纸是[ ]
A.《邸报》
B.《戏报》
C.《中外纪闻》
D.《昭文新报》