( )在水溶液中,用EΘ(Mn+/ M) 不仅可以判断Mn+离子的稳定性,也可以判断金属M的活泼性。
A.
正确
B.
错误
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【单选题】An administrator created a .env file in a user’s home directory to configure a number of custom environment variables for a local application. However, after the user logs out and then logs back into ...
A.
A shell other than ksh is being used by the user.
B.
The line ’export ENV=$HOME/.env’ is missing from /etc/profile.
C.
The line ’export ENV=$HOME/.env’ is missing from the user’s .profile.
D.
The env_profile attribute is not defined for the user within /etc/security/user.