在油脂性基质中有适宜的稠度和涂展性的基质是()
A.羊毛脂
B.凡士林
C.蜂蜡
D.豚脂
E.液状石蜡
参考答案:B
I want to buy a nice present ________ my mother and I must give it ________ her myself.
A.for; to
B.to; for
C.with; to
D.for; for
浇筑混凝土前应对钢筋骨架的尺寸、位置等进行()并校正。