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【多选题】
由于所有用户对/etc/passwd文件均有 权限，为了增强系统的安全性，用户经过加密之后的口令都存放在 文件中。A.
读取
B.
/etc/shadow
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举一反三
【单选题】At night while the ship is tied up to the dock，a fire breaks out in a cargo hatch. After sounding the alarm，what should the person on watch do?（）
A.
Begin fighting the fire immediately
B.
Await further orders from the Master
C.
Let go the lines to let the vessel drift to an anchorage
D.
Send a person to summon the shore authorities
【简答题】A person breaks the law. He or she should be punished.
【简答题】The guest shows his (1)________ to (2)________ out. His bill goes to (3)_________ Yuan in total. He has ordered two bottles of (4)________ and a (5)_________ on 6th hole so he had to add 25 Yuan to ...
【简答题】主要适用于宽行距的中耕植物的灌水方式是（）。
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