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【单选题】
无差异曲线上任一点商品X和Y的边际替代率等于它们的A.
价格之比
B.
数量之比
C.
边际效用之比
D.
总效用之比
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反馈参考答案：
举一反三
【单选题】下列关于眼膏剂的叙述错误的是（）
A.
疗效持久、能减轻眼睑对眼球的磨擦
B.
用于眼部手术或创伤的眼膏剂不得加入抑菌剂或抗氧剂
C.
不得检验出金黄色葡萄球菌和绿脓杆菌
D.
常用基质为白凡士林、液体石蜡和羊毛脂的混合物
【单选题】Be quiet! I have________ to tell you．
A.
something new
B.
anything new
C.
new something
D.
new anything
【简答题】完形填空。 Today is Sunday. Mary and her mother 1 to do the shopping. Her mother wants to buy something for supper. Mary wants to buy a new skirt and some school things. They come to a new shop. 'What doe...
【简答题】旅行の感想 聞き取り練習 (2)3 第一空 (1)感想 第二空以降 (2)どんな点(簡体句の文で答える)
【单选题】一个实际直流电压源,其开路电压 Uoc=24V ,短路电流 Isc=30A ,则当外接 1.2Ω 电阻时, 其电流为 ( )A
A.
12
B.
20
C.
10
D.
15
【简答题】When you talk to yourself in a foreign language, you don't have to feel 1) , because nobody can 2) you. 2. You can talk to yourself about 3) – what you had for breakfast, where you're 4) – anything. 3...
【简答题】When you talk to yourself in a foreign language, you don't have to feel 1) , because nobody can 2) you. 2. You can talk to yourself about 3) – what you had for breakfast, where you're 4) – anything. 3...
【简答题】旅行の感想 聞き取り練習 (2)2 第一空 (1)感想 第二空以降 (2)どんな点(簡体句の文で答える)
【单选题】下列关于眼膏剂的叙述错误的是( )
A.
具有疗效持久、能减轻眼睑对眼球的摩擦
B.
用于眼部手术或创伤的眼膏剂不得加入抑菌剂或抗氧剂
C.
不得检验出金黄色葡萄球菌和绿脓杆菌
D.
不溶性药物应先研成极细粉末，并通过1号筛
E.
所用容器与包装材料应严格灭菌
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