丙烯制冷与()构成复迭制冷。
A.乙烯压缩机
B.裂解气压缩机
C.甲烷压缩机
D.膨胀机
参考答案:A
.
Hardly_______when the fans began to scream with excitement.
A.the star showed up
B.did the star show up
C.had the star showed up
D.the star had showed up
宫颈癌的临床分期的根据是
A.临床症状严重程度
B.有无淋巴结转移
C.手术分期
D.病理分期
E.病灶侵犯范围