皮皮学，免费搜题
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搜题
【单选题】
多少岁A.
5.0
B.
10.0
C.
15.0
D.
30.0
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】How the electric power is generated?
A.
kinetic-potential generation
B.
chemical-mechanical generation
C.
thermal-mehanical generation
D.
internal-mechanical generation
【简答题】The flywheel connected to the crankshaft provides the momentum to keep the crankshaft turning without the application of power, through the energy generated during the power stroke.
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