主蒸汽管道上每一疏水管均串联装设()阀门。
A.一个
B.两个
C.三个
参考答案:B
He found himself ___ by the villagers.
A.misunderstand
B.misunderstood
C.misunderstanding
D.was misunderstood
侵袭性真菌感染常见的发热类型有()
A.稽留热
B.弛张热
C.不规则热
D.持续低热
E.较少高热