题目内容
（请给出正确答案）
[主观题]
Why does journalism sometimes include personal opinions？A．Because it is almost impossible
Why does journalism sometimes include personal opinions？
A．Because it is almost impossible not to do so.
B．Because the reporter has strong feelings to express.
C．Because the reporter wants to get a good reputation.
D．Because the reporter wants to mislead the publi
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、轴面齿距Px、分度圆直径d1及直径系数q等参数之间有何关系？蜗杆直径系数q有何意义？
