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【多选题】
经营者的下列行为中，违反了消费者权益保护法规定义务的有（ ）。A.
店堂告示“商品一旦售出概不退换”
B.
经营者不将香烟销售给未成年人
C.
顾客购买两条毛巾索要发票，经营者以“小额商品，不开发票”为由加以拒绝
D.
出售蛋类食品，价格经常变化
E.
超市经营者要求消费者在进入超市前寄存包袋
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【简答题】S1:What is the diameter of the turning circle?S2:The diameter of the turning circle is 900 metersQ:What is being asked?A. The radius of the turning circle. B. The turning ability of the vessel. C. The...
【多选题】以下对长白山自然保护区的描述正确的有
A.
山中盛产东北三宝，()人参，貂皮，鹿茸
B.
素有长白林海之称。
C.
入选联合国教科文组织人与生物圈自然保护区网。
D.
有百药之乡之称。
E.
是远近闻名的鹤乡。
【简答题】S1:What is the diameter of the turning circle?S2:The diameter of the turning circle is about 510 metres.Q:What are they talking about?A. The stopping distance. B. The manoeuvrability of the ship. C. T...
【单选题】下列哪个序列相关可用 DW检验(v t 为具有零均值,常数方差且不存在序列相关的随机变量)
A.
u t ＝ ρ u t－1 +v t
B.
u t ＝ ρ u t－1 + ρ 2 u t－2 + … +v t
C.
u t ＝ ρ v t
D.
u t ＝ ρ v t + ρ 2 v t-1 + …
【简答题】S1:What is the diameter of the turning circle?S2:The diameter of the turning circle is about 10 meters.Q:What are they talking about?A. The stopping distance. B. The manoeuvrability of the ship. C. Th...
【单选题】S1: What is the diameter of the turning circle? S2: The diameter of the turning circle is 900 meters. Q: What is being asked?
A.
The radius of the turning circle.
B.
The turning ability of the vessel.
C.
The diameter of the turning distance.
D.
The diameter of the turning circle.
【多选题】下列哪个序列相关可用DW检验(v t 为具有零均值,常数方差且不存在序列相关的随机变量)
A.
ut＝ρut－1+vt
B.
u t ＝ρu t－1 +v t
C.
u t ＝ρv t
D.
u t ＝ρv t +ρ 2 v t-1 +…
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