一般民用建筑的室内外地面应设高差,通常取()
A.430mm
B.440mm
C.450mm
D.460mm
参考答案:C
Frank put the medicine in the topdrawer to make sure it would not be ______ to the kids.[ ]
A. accessible
B. relative
C. acceptable
D. sensitive
在Windows中,想选定当前文件夹中的所有文件和文件夹对象,可使用的组合键是( )
A.ctrl+V
B.ctrl+A
C.ctrl+X
D.ctrl+C