Add-on services such as credit, delivery, installation, and repairs provided by the marketing channel are referred to as service backup.
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病人，女性，60岁，腰肌劳损，行热疗。目的不包括：
A. 促进炎症的消散或局限
B. 减轻深部组织充血
C. 缓解疼痛
D. 减慢炎症扩散或化脓
E. 保暖
Products such as heating and cooling systems are usually sold and maintained by the company or by franchised dealers.
A. 对
B. 错
When economic conditions are depressed, producers want to move goods to market using longer channels.
A. 对
B. 错
小儿及昏迷患者用热水袋的水温应低于()。
A. 30℃
B. 40℃
C. 50℃
D. 60℃
E. 70℃
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