【多选题】日光温室蔬菜栽培茬口的按季节茬口可分( )。
【单选题】You should always ...
A.
enter someone's ffice before you knock.
B.
knock before you go into someone's ofice.
【多选题】关于Linux中文件权限,那些说法是错误的
B.
对于一个文件来说,用户可以分为文件拥有者和其他用户两类
C.
在任何情况下,文件拥有者对于文件都有全部权限
【单选题】________, I'll wait for you to have dinner together. Be back as early as possible. [ ]
B.
No matter how it is late
D.
No matter how late is it