构成物质的分子内原子之间的几何排列称为(),分子之间的几何排列称为态结构。
参考答案:分子结构
Unfortunately, the package I was expecting was _____ to the wrong address. [ ]
A. written
B. given
C. packed
D. delivered
牌号HRB335直径18mm的钢筋抗拉极限载荷是138KN,其抗拉强度是()Mpa。
A、545
B、542
C、540
D、550