男性，63岁，因前列腺增生，排尿困难，要求手术治疗。该病变前列腺增生应与以下疾

Air is ________ and of no smell but we can feel its motion when there is a wind.[ ]

A. unavoidable

B. invisible

C. inaccessible

D. unavailable

数据流图可用于抽象描述一个软件的逻辑模型，并由若干种基本的图形符号组成，下述图名 Ⅰ．加工　　Ⅱ．数据流　　Ⅲ．数据存储　　Ⅳ．外部实体哪些是构成数据流图的基本图形？

A．Ⅰ、Ⅱ和Ⅲ

B．Ⅱ、Ⅲ和Ⅳ

C．Ⅱ和Ⅲ

D．全是

脓性指头炎不及时治疗易发生（）。

A.甲沟炎

B.化脓性腱鞘炎

C.化脓性滑囊炎

D.败血症

E.指骨缺血性坏死

It is politely requested by the hotel management that radios __________ after 11 o'clock at night.[ ]

A. were not played

B. not be played

C. not to play

D. did not play