旅行社产品定价的价格上限是()。
A.旅游市场的竞争性
B.旅游服务的供应量
C.目标市场的购买力
D.旅行社的组团能力
参考答案：C
The nurse is providing home care instructions to a client who has recently had a skin graft. Which instruction is most important for the client to remember（）
A. Use cosmetic camouflage techniques.
B. Protect the graft from direct sunlight.
C. Continue physical therapy.
D. Apply lubricating lotion to the graft site.
正式比赛时守门员的头盔（）。
A.必须戴
B.不允许戴
C.无所谓
