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【单选题】
对于发动机的工作范围,说法正确的是?A.
从动力性考虑，发动机工作转速范围应在最大功率转速和最大转速之间
B.
从动力性考虑，发动机工作转速范围应在0和最大扭矩转速之间
C.
从经济性考虑，发动机工作转速范围应在最大功率转速与最低燃油消耗率转速之间
D.
从经济性考虑，发动机工作转速范围应在最大功率转速和最大扭矩转速之间
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举一反三
【简答题】Practice yoga help you keep ____ and have peace of mind.
【单选题】Yoga beginners can use items to assist practice, such as _______.
A.
yoga brick
B.
wall
C.
chairs
D.
all of them
【简答题】Use three words to describe the practice of yoga.
【简答题】Why do baby boomers go for yoga practice?
【简答题】Yoga, the ancient practice of postures, breathing and meditation, is gaining a lot of attention from the material world that its serious practitioners are trying to escape. Yoga practitioners are tryi...
【简答题】Yoga（瑜伽）is an ancient practice that helps create a sense of union in body, mind, and spirit. It brings us balance. After a long time of practice yoga, you no longer just practice it — you love it. Yog...
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