CCD

A:直接转换 B:间接转换 C:光电转换 D:电光转换 E:闪烁晶体

CCD

CCD的种类有（）

A:黑白CCD B:可见光CCD C:X射线CCD D:彩色CCD E:微光CCD

CCD是（）

A:直接转换 B:间接转换 C:光电转换 D:电光转换 E:闪烁晶体

CCD（）

A:直接转换  B:间接转换  C:光电转换  D:电光转换  E:闪烁晶体

Chang, Tian and An are three users of the system. Chang and An are in the same group. Tian is a Super User. Which of the following rights is inconsistent with the given policies

A:Tian has W(write) access to An's Mail files B:Tian has E(execute)access to Art's Mail files C:Chian has R(read) access to An's text files D:Tian has E(execute) access to Chang's Binary files

Chang, Tian and An are three users of the system. Chang and An are in the same group. Tian is a Super User. Which of the following rights is inconsistent with the given policies（）

A:Tian has W(write) access to An''s Mail files B:Tian has E(execute) access to An''s Mail files C:Chian has R(read) access to An''s text files D:Tian has E(execute) access to Chang''s Binary files