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【单选题】
The before-trade price of fish in Denmark is $10.00 per pound. The world price of fish is $6.00 per pound. Denmark is a price-taker in the fish market. If Denmark begins to allow trade in fish, its consumers of fish will becomeA.
better off, its producers of fish will become better off, and on balance the citizens of Denmark will become better off.
B.
worse off, its producers of fish will become better off, and on balance the citizens of Denmark will become worse off.
C.
worse off, its producers of fish will become better off, and on balance the citizens of Denmark will become worse off.
D.
better off, its producers of fish will become worse off, and on balance the citizens of Denmark will become better off.
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举一反三
【多选题】以下属于声乐教学的基本原则的是
A.
每次练声时间不超过40分钟，每天不超过2小时
B.
保护好嗓音
C.
用科学的方法
D.
循序渐进，有目的、有计划地进行有效练声，不要急于求成
【简答题】拉深变形程度用拉深系数______表示。
【多选题】以下关于西装穿搭的描述,正确的有()
A.
西装从风格类型分，可以分为美式、欧式、英式、日式四种，其中英式、日式都比较适合亚洲人体型
B.
穿正装西装要遵循“三色原则”
C.
穿正装西装要遵循“三一定律”
D.
新西装穿着前要先去除袖口的商标
【简答题】试求如图 所示电路中的电流 I 1 、 I 2 和 I 3 。
【单选题】拉深工艺的拉深系数m 是指
A.
拉深后工件的直径d与材料厚度t之比
B.
拉深材料的厚度t与拉深后工件的直径d之比
C.
拉深后工件的直径d与拉深前毛坯的直径D之比
D.
拉深前毛坯直径D与拉深后工件直径d之比
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