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【多选题】
关于虚拟变量，下列表述正确的有A.
是质的因素的数量变化
B.
一般情况下取值为 1 和 0
C.
代表质的因素
D.
在有些情况下可以代表数量因素
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反馈参考答案：
举一反三
【简答题】根据短文内容，判断正(T) 误(F)。 One afternoon some boys made a lot of noise in class. The teacher got angry. He kept them in the classroom after school. He told them to add all the numbers from 1 to 100 together....
【单选题】烹饪学的学科体系是由一些基本学科构成的,主要包括( )。
A.
烹饪史学、烹饪化学、烹饪营养卫生学、烹饪原料学、烹饪美学、烹饪工艺学
B.
烹饪史学、烹饪化学、烹饪营养卫生学、烹饪民俗学、烹饪心理学、烹饪工艺学
C.
烹饪史学、烹饪园艺学、烹饪营养卫生学、烹饪化学、烹饪美学、烹饪工艺学
D.
烹饪史学、烹饪商业学、烹饪化学、烹饪营养卫生学、烹饪美学、烹饪工艺学
【简答题】Read para 1 in page 4 and do the following exercises • Add punctuations or capitalize the words wherever they are necessary to form direct speech. •1.humor will be important in my class she said •2.he...
【单选题】Questions 1 – 20 • In this section you must choose the word or phrase which best completes each sentence. 1 The teacher encouraged her students .................... to an English pen-friend.
A.
should write
B.
write
C.
wrote
D.
to write
【单选题】During my middle school years, I was very allergic to English grammar. 1 , the two incidents I 2 later changed my view about learning English. 3 I think it is really fun to learn English grammar. It o...
A.
However
B.
Besides
C.
Therefore
D.
Instead
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