灌注各种锚栓埋入杆应用不低于20MPa的沙浆。
参考答案：对
若a+3b=2时，则代数式3-a-3b的值为（ ）。
-----Would you like to attend China’s Got Talent(中国达人秀)?
------_________ But I’m busy revising for my test.
A．Don’t mention it.
B．I’d love lo.
C．That’s all right.
D．My pleasure.
