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【判断题】
边际效用为正时,总效用增加;边际效用为零时,总效用最大;边际效用为负时,总效用递减。A.
正确
B.
错误
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举一反三
【简答题】Fill in the blanks. 用所给单词的适当形式填空。 There are two _____ (glass) of water on the table. Xinxin Seafood City is a good place for seafood _______ (love). Your dishes will be ready in a few ______ (minute)...
【单选题】What should you do if you are offered a drink by your host?
A.
Return the cup to your host after finishing the drink
B.
Wipe your mouth with your sleeve
C.
Accept a drink from the cup using just one hand
D.
Put the cup in front of you after finishing the drink
【简答题】Your dishes will be ready in a few____(minutes/minute),sir.
【简答题】Your dishes will be ready in a few _______ (minute), sir.
【简答题】Prepare a talk of about 2-3 minutes about food. It can be one of your favorite dishes, the table manners in your hometown, or your opinion about takeout food, or stories with your famiy or friends rel...
【简答题】标注组合体定位尺寸时,应首先确定 、 、 三个方向尺寸基准。一般以组合体的 、 、 等几何元素作为基准。
【简答题】Your dishes will be ready in a few______(minutes/minute),sir.
【简答题】简述材料冲击强度测定的实验步骤
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