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【单选题】
7-3. 对文件空闲存储空间的管理,在MS-DOS中是采用(文件分配表);UNIX中采用(成组链接法);Linux中的extfs则采用(C)。A.
（1）空闲表
B.
（2）文件分配表
C.
（3）位示图
D.
（4）成组链接法
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举一反三
【单选题】Online learning helps us _________ new friends. A. u reach p to B. reach out to C. search out to D. search up to
A.
reach up to
B.
reach out to
C.
search out to
D.
search up to
【单选题】Carry out square search pattern starting at 1340 hours UTC
A.
Radar search is going to be conducted
B.
Square search is going to be carried out
C.
Sector search is going to be conducted
D.
Aircraft search is going to be carried out
【单选题】Carry out sector search pattern starting at 1340 hours UTC
A.
Radar search is going to be conducted
B.
Square search is going to be carried out
C.
Sector search is going to be conducted
D.
Aircraft search is going to be carried out
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