题目内容

20.站立训练的适应证为( )。

A.骨折未愈合
B.急性期关节疼痛
C.骨关节肿瘤
D.关节脱位
E.长期卧床

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A. 汽油
B. 汽车
C. 竞技运动观赏服务业
D. 健身休闲娱乐服务业

下列商品中,有可能出现完全垄断的是()

A. 商品房
B. 汽车
C. 体育赛事
D. 瑜伽课

网球俱乐部通常会要求消费者支付年度会员费,然后再加上各项使用场地或各局高尔夫球的费用,这是()

A. 一级价格歧视
B. 二级价格歧视
C. 三级价格歧视
D. 以上都不是

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