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单项选择题
实际车型的变速器传动比分配严格按照等比级数。
A．对
B．错
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总结是对工作进行系统的分析，将工作中感性的认识上升到理性的认识。
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夏季大三角由哪三颗星组成？
A．织女星、牛郎星、心宿二
B．织女星、牛郎星、天狼星
C．织女星、牛郎星、天津四
D．织女星、天狼星、参宿四
单项选择题
If a positively charged particle is placed at point P, the force due to the magnetic field ( )
A. increases with increasing charge B. is opposite the direction of the magnetic field C. is zero D. is in the direction of the magnetic field E. causes the particle to accelerate to the right
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A.
increases with increasing charge
B.
is opposite the direction of the magnetic field
C.
is zero
D.
is in the direction of the magnetic field
E.
causes the particle to accelerate to the right
