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【单选题】
某患者因外伤急性失血,血压降至70/30mmHg,尿量明显减少,尿量减少的原因是A.
肾小球毛细血管血压下降
B.
肾小球滤过面积减小
C.
血浆胶体渗透压升高
D.
血浆晶体渗透压降低
E.
近球小管对水的重吸收增加
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举一反三
【单选题】位示图(bitmap)可用于磁盘空间的管理。设某系统磁盘共有500块，块号从0到499，第0字的第0位表示第0块，第0字的第1位表示第1块，依次类推。若用位示图法管理这500块的盘空间，当字长为32位时，第i个字节第j位对应的块号是( )。
A.
32i+j
B.
32i+j-1
C.
32i+j-32
D.
32i+j-32-1
【单选题】Why does Stanley want to study English?
A.
He needs to write essays in English.
B.
He needs to watch English movies, do homework and read in English
C.
He needs to prepare his job interview in English.
【简答题】设某系统磁盘共有 500 块 , 块号从 0 ~ 499, 若用位示图法管理这 500 块的盘空间 , 当字长为 32 位时 : (1) 位示图需要多少个字 ? (2) 第 i 字第 j 位对应的块号是多少 ?
【单选题】位示图可用于磁盘空间的管理。设某系统磁盘共有500块，块号从0到499；第0字的第0位表示第0块，第0字的第1位表示第1块，依次类推。若用位示图法管理这500块的磁盘空间，当字长为32位时，第i个第j位对应的块号是______。
A.
32i+j
B.
32i+j-1
C.
32i+j-32
D.
32i+j-32-1
【单选题】Why does Peter have little chace to talk to English people?
A.
He seldom goes out.
B.
He lives in a place where there are few English people.
C.
He seldom meets English people.
D.
He is too busy to meet and talk to the local English people.
【简答题】设某系统磁盘共有500块,块号从0-499,若用位示图法管理这500块的空间,当字长为32位时,1)位示图需要多少个字?2)第i字第j位对应的块号是多少?
【单选题】Why does speaker say "English is everywhere"?
A.
English is widely used in various field
B.
English is spoken by more people
C.
English is earier to learn
D.
About 6000 languages will no longer be spoken
【单选题】Why does the teacher write this letter?
A.
To help his students learn English.
B.
To make his students work harder.
C.
To give his students some advice.
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