在配送路线的选择中，占有核心地位的是（）。
A、企业总效益
B、成本控制
C、工作效率
D、运输距离
参考答案：B
小题1:I want to travel, e______________to English-speaking countries.
小题2:Keeping p__________, such as dogs and cats is more and more popular among young and old.
小题3:Have you ever h_______________ of the interesting story?
小题4:Would you m_______________ turning down the music?
小题5:He has been c________________ stamps for five years.
患者男，32岁，咳嗽1月余，伴低热、痰中带血10天，胸片示：右肺上叶尖段炎症，伴有空洞形成。最可能的诊断是
A．肺脓肿B．浸润型肺结核C．支气管扩张D．癌性空洞伴感染E．金黄色葡萄球菌肺炎
