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【单选题】
渐开线齿廓在其基圆上的压力角为( )。A.
20°
B.
15°
C.
0°
D.
45°
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反馈参考答案：
举一反三
【多选题】What are the strategies the author used to supply specific evidences in the body paragraphs?
A.
By citing examples.
B.
By explaining causes and offering reasons.
C.
By offering datum.
D.
By citing papers.
【多选题】What are the strategies the author used to supply specific evidences in the body paragraphs?
A.
By citing examples
B.
By explaining causes and offering reasons.
C.
By offering datum.
D.
None of the above
【单选题】The paragraphs used to test the automaticity of your child should be_______.
A.
readable and interesting
B.
a little bit above his level
C.
full of dramatic expressions
D.
new to him
【多选题】The techniques used in the last 2 paragraphs are ( ).
A.
emphasis
B.
comparison
C.
analysis
D.
contrast
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