浮球阀在制冷系统中的作用?
参考答案:
浮球阀在制冷系统中的作用是:(1)节流降压;(2)自动调节中间冷却器和蒸发器的液位。
Maybe you could be an inventor ---- maybe even good enough to ______ an idea for the next iPhone or new medicine for cancer.
A.put up with
B.keep up with
C.catch up with
D.come up with
以其他药品冒充精神药品的
A.药品B.新药C.劣药D.辅料E.假药