—Do you know why the sun looks much bigger on the horizon?

—Well, well,         .I have never read about that.

A．that depends

B．I can’t tell you

C．there is some doubt

D．you really have me there

蒸发器管组沉浸于载冷剂水箱中，制冷剂在管内蒸发，载冷剂在搅拌器的作用下，在箱体内流动，以增强传热的是（）蒸发器。

A、板式

B、螺旋板式

C、水箱型（沉浸式）