图示为一钟表轮系，则传动比关系正确的是（ ）。http://edu-image.nosdn.127.net/5775AF9BA9F98CEFC38B0BA61B6EFB3D.PNG?imageView&thumbnail=890x0&quality=100
举一反三
- 图示为定轴轮系，其传动比大小满足http://edu-image.nosdn.127.net/93603D7ACFC7BC11ABD365A70E34C361.PNG?imageView&thumbnail=890x0&quality=100。http://edu-image.nosdn.127.net/FE6DBD5A6879276CDCB4F09D9D174C0A.PNG?imageView&thumbnail=890x0&quality=100
- 对于图中所示轮系，传动比关系正确的是http://edu-image.nosdn.127.net/AAAF02BC39CB6DCBC4A5CC9FC7230780.PNG?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 若第9题中当电路中总电压http://edu-image.nosdn.127.net/45D53DF610EBF196EBE5238589C91ABF.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/8232D55E2C1346F746EFBB0780167F51.png?imageView&thumbnail=890x0&quality=100，http://edu-image.nosdn.127.net/A2CC3366BF7376F66D8EFFEB40B97149.png?imageView&thumbnail=890x0&quality=100，以下叙述正确的是
- 图示齿轮传动系统中，一对齿轮传动效率为0.95，一对轴承传动效率为0.99。则机械传动的总效率http://edu-image.nosdn.127.net/812C18D8A951DA32227E7DD4576FB86C.png?imageView&thumbnail=890x0&quality=100等于（ ）。http://edu-image.nosdn.127.net/2DA6A87BB0BB69C9937D49E5D8745B54.png?imageView&thumbnail=890x0&quality=100
- 已知图示有压混联输水管路（按长管计）各管段的沿程阻力系数http://edu-image.nosdn.127.net/1443EEDD6C2FA09BB126BDB9642044BA.png?imageView&thumbnail=890x0&quality=100，管径http://edu-image.nosdn.127.net/974CD2163F1D3BFAAEDC8DA84872F1CA.png?imageView&thumbnail=890x0&quality=100，管长http://edu-image.nosdn.127.net/76A594A1299928A8955B35FC20252D31.png?imageView&thumbnail=890x0&quality=100，流量http://edu-image.nosdn.127.net/1D52DAEDDD85EC829BD9C6E6F96AE143.png?imageView&thumbnail=890x0&quality=100,,则http://edu-image.nosdn.127.net/DAC36D2F41C6C3F84F776BC849094BA1.png?imageView&thumbnail=890x0&quality=100中k=（ ）。http://edu-image.nosdn.127.net/06283F2B8E549ACD83D8DDBBD7E4BE7C.png?imageView&thumbnail=890x0&quality=100