制冷系统中,液氨贮槽的作用?
参考答案:液氨贮槽在制冷系统中起着稳定制冷剂循环量的作用,以满足合成、铜洗氨冷器和铜洗加氨的需要。
词汇运用。
I have a (1)______(好) friend. His name is Peter. He is in China with his two (2)______(叔叔). He
is practicing (3)______(说) Chinese. His father is a doctor and his mother is a (4)______(经理). We
study in Beijing Sunshine Secondary School. We (5)______(在) in the same class. He sits in (6)______(前面) of me. He likes music (7)______(所以) he has got many CDs. He likes (8)______(听) to music
very much. He likes playing table tennis, (9)______(也). After school we often play table tennis in the
(10)______(体育馆). He plays football very well.
1._____ 2._____ 3._____ 4._____ 5._____
6._____ 7._____ 8._____ 9._____ 10._____
若发生远处转移,最常见的转移部位为
A.脑
B.骨
C.肝
D.肾
E.肺