车轮的轮缘贴着轨道侧面运行,车轮的轮缘与轨道的侧面有轻微的摩擦这属啃轨现象。()
参考答案:错
丙酮酸羧化酶催化的反应是在什么场所进行的()。
A.胞液
B.胞液与线粒体
C.内质网
D.线粒体
E.以上都是
The duty-paying value shall be ().
A. the value of imports or exports declared by the consignors or consignees
B. the true transaction value of imports & exports
C. the value higher than the transaction value of identical or similar goods
D. the value lower than the transaction value of identical or similar goods