在制冷装置中毛细管对进入蒸发器的液态制冷剂(),并实现流量控制。
A、汽化
B、液化
C、节流降压
D、控制温度
参考答案:C
His friend found______________ to tell him the truth .
A.that was necessary
B.necessary
C.it’s necessary
D.it necessary
谈谈如何在教学中促进迁移。