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【单选题】
灯距严格规定不少于( ) mA.
0.2
B.
0.3
C.
0.4
D.
0.5
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反馈参考答案：
举一反三
【简答题】求整式x 2 -2x+1减去-x+3的差等于______．
【单选题】—Do you think it's a good idea to make friends with your students? — ______________ ,I do. I think it's a good idea. [ ]
A.
Really
B.
Obviously
C.
Actually
D.
Generally
【简答题】求整式x 2 +x+1减去-x 2 -x+1的差等于______．
【单选题】—Do you think it’s a good idea to make friends with your students ? -- ________,I do .I think it’s a great idea .
A.
Really
B.
Obviously
C.
Actually
D.
Generally
【简答题】设函数 是偶函数，则实数 的值为 .
【单选题】—Do you think it’s a good idea to make friends with your students ? — ___________, I do. I think it’s a great idea.
A.
Informally
B.
Physically
C.
Actually
D.
Rarely
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