壳管式冷凝器是利用冷却水的温升来吸收制冷剂过热蒸汽放出的热量的。
参考答案：对
The two birds _________ each other in shape and color. In other words, they ________ each other in shape and color.
A．differ; are different from
B．differ from; are different to
C．resemble; are similar to
D．resemble; are similar with
细胞系
