A business believes a price discrimination strategy will increase both its output and profits. For this to occur, the firm must have:
A. customers who cannot resell the product and whose price elasticities of demand are in a limited range
B. distinct groups of customers with different price elasticities of demand who are able to resell the product
C. distinct groups of customers with different price elasticities of demand who cannot resell the product
查看答案
内呼吸是指氧气从吸入()的空气中进入血液,进行血氧交换。
A. 上呼吸道
B. 肺泡
C. 肺管
成人人静态下的心率:60–100次/分,平均()。
A. 68次/min
B. 70次/min
C. 72次/min
现场急救时利用清晰明确的伤情标记,可以节省()的人力资源。
A. 急救人员
B. 医疗人员
C. 护理人员
在较大的恶性事故现场发生群死群伤时应()急救。
A. 立即
B. 轻、重伤员统一
C. 先重后轻分类