题目内容

This is our best price,______which we have concluded many orders with other buyers in your city.

A. on
B. for
C. by
D. at

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If it weren't for our good relations, we would not consider______your price.

A. giving
B. to give
C. making
D. to make

If the price is______us, we would sign a long-term contract.

A. acceptable to
B. received by
C. reached to
D. accept by

承受偏心拉伸(压缩)的杆件,其中性轴仍然通过横截面的形心。

A. 对
B. 错

偏心拉压杆件中性轴的位置,取决于梁截面的几何尺寸和载荷作用点的位置,而与载荷的大小无关。

A. 对
B. 错