管顶以上回填土夯实高度达( )m以上,方可使用碾压机械。
A.0.5
B.1.0
C.1.5
D.2.0
参考答案:C
用所学的知识试判断下列所给因式哪个因式的分解结果是(3x-2)2?请写出详细的判断依据.
(1)3x3-12x
(2)9x2-12x+4.
The word "media" basically refers to _____ we commonly call newspapers, magazines, radios and
televisions. [ ]
A. which
B. that
C. what
D. where