批发零售贸易业库存指报告期末各种登记注册类型的批发零售贸易企业已取得所有权的商品。
参考答案：对
解析：考察批发零售贸易业库存概念。
After he was knocked down by a bike, he was badly hurt and had to ______ to his feet.
A．stand
B．struggle
C．run
D．sit
DNA复制时辨认复制起始点主要靠
A．拓扑异构酶
B．解螺旋酶
C．引物酶
D．Dna A蛋白
E．Dna C蛋白
