本课配套习题挑战模式1/5
A: 牛顿(N) |
B: 千克(kg) |
C: 千克/米3(kg/m3) |
D: 帕斯卡(Pa) |
- 提示1:IOWNleS9jeS9k+enr+aJgOWQq+eJqei0qOWkmuWwkeaIkeS7rOWPq+WvhuW6pg==
- 提示2:IGtn5piv6LSo6YeP5Y2V5L2N
- 提示3:IOeJm+mhv+aYr+WKm+eahOWNleS9je+8jOW4leaWr+WNoeaYr+WOi+W8uuWNleS9jQ==
- 答案:Qw==
PGRpdj7lr4bluqbmmK/otKjph4/lkozkvZPnp6/nmoTmr5TlgLzvvIzmiYDku6XljZXkvY3kuZ/lupTor6XmmK/otKjph4/nmoTljZXkvY3mr5TkuIrkvZPnp6/nmoTljZXkvY3jgII8L2Rpdj4=
本课配套习题挑战模式2/5
关于密度的说法正确的是( )
A: 固体的密度一定比液体的密度大 |
B: 质量越大的物体,它的密度越大 |
C: 体积越小的物体,它的密度越大 |
D: 密度是表示物质的一种特性,跟质量和体积无关 |
- 提示1:PHA+5rC06ZO25piv5ray5L2T77yM5a+G5bqm5q+U6ZOB55qE5a+G5bqm5aSn77ybPGJyPjwvcD4=
- 提示2:PHA+5a+G5bqm5piv54mp6LSo55qE54m55oCn77ybPGJyPjwvcD4=
- 提示3:PHA+5a+G5bqm6Lef6LSo6YeP5ZKM5L2T56ev5peg5YWz77yM55Sx5pys6Lqr5p2Q5paZ5Yaz5a6a44CCPGJyPjwvcD4=
- 答案:RA==
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
本课配套习题挑战模式3/5
我们常说铁比棉花重. 所说的“铁比棉花重”其实是指( )
A: 铁的体积比棉花大 |
B: 铁的密度比棉花大 |
C: 铁的硬度比棉花大 |
D: 铁的质量比棉花大 |
- 提示1:PHA+5LiA5bCP5Z2X6ZOB5ZKM5LiA5rG96L2m5qOJ6Iqx5ZOq5Liq6YeN44CCPC9wPg==
- 提示2:PHA+6L+Z6YeM55qE6YeN5bm25LiN5piv5q+U6L6D6LSo6YeP6ICM5piv5LiA56eN5oSf6KeJPC9wPg==
- 提示3:PHA+5pys6aKY5Lit5omA6KaB5q+U6L6D55qE5piv54mp6LSo55qE5a+G5bqm5YWz57O744CCPC9wPg==
- 答案:Qg==
PHA+5LuO6aKY5oSP5Lit5Y+v5Lul5piO56Gu4oCc6ZOB5q+U5qOJ6Iqx6YeN4oCd5oyH55qE5piv5Y2V5L2N5L2T56ev6ZOB55qE6LSo6YeP5q+U5Y2V5L2N5L2T56ev5qOJ6Iqx55qE6LSo6YeP5aSn77yM5Lmf5bCx5piv6K+06ZOB55qE5a+G5bqm5q+U5qOJ6Iqx55qE5a+G5bqm5aSn77yM5pWF6YCJQu+8jjxicj48L3A+
本课配套习题挑战模式4/5
科学家最新研制了一款微型无人侦察机--“蜂鸟”. 为了减轻其质量,该侦察机的材料应具有的特点是( )
A: 硬度高 |
B: 熔点低 |
C: 密度小 |
D: 导热性好 |
- 提示1:PHA+5YeP6L275peg5Lq65py66LSo6YeP77yM5L2G5piv5LiN6IO95YeP6L275YW25L2T56evPC9wPg==
- 提示2:PHA+5L2T56ev5LiN5Y+Y77yM6KaB5oOz6ZmN5L2O6LSo6YeP77yM5b+F6aG755So5a+G5bqm5bCP55qE54mp6LSoPC9wPg==
- 提示3:PHA+5YeP6L276LSo6YeP5ZKM56Gs5bqm77yM54aU54K55ZKM5a+854Ot6IO95Yqb5peg5YWz77yM5LiO54mp6LSo55qE5a+G5bqm5pyJ5YWzPC9wPg==
- 答案:Qw==
PGRpdj5B44CB56Gs5bqm5piv5oyH54mp5L2T55qE5Z2a56Gs56iL5bqm77yM5LiN5Lya5b2x5ZON6LSo6YePLjxicj48L2Rpdj48ZGl2PkLjgIHnhpTngrnmjIfmmbbkvZPnhpTljJbml7bnmoTmuKnluqbvvIzkuI7otKjph4/ml6DlhbMuPC9kaXY+PGRpdj5D44CB55Sx5YWs5byPz4E9bSBWIOefpe+8jOWcqOWvhuW6puS4gOWumuaXtu+8jOS9k+enr+i2iuWkp+i0qOmHj+i2iuWkp++8jO+8m+WcqOS9k+enr+S4gOWumuaXtu+8jOWvhuW6pui2iuWkp+i0qOmHj+i2iuWkpy48L2Rpdj48ZGl2PkTjgIHlr7zng63mgKfmmK/mjIfniankvZPlr7nng63nmoTkvKDlr7zog73lipvvvIzkuI7otKjph4/ml6DlhbM8L2Rpdj4=
本课配套习题挑战模式5/5
A: 1.0103kg/m3=1.0103g/cm3 |
B: 1.0103g/cm3=1.0g/dm3 |
C: 1.0103kg/m3=1.0g/cm3 |
D: 1.0103kg/m3=1.0106g/cm3 |
- 提示1:IOi/mOiusOW+l+S7peawtOeahOWvhuW6puaNoueul+S9nOS4uuWPgueFp+eahOaWueazleS5iA==
- 提示2:IOW/mOiusOS6hu+8jOayoeWFs+ezu++8jOmHjeaWsOeci+eci+ivvueoi+OAgg==
- 提示3:IOi/mOS4jeS8mu+8n+mCo+WPquiDveS4gOatpeS4gOatpeeul+S6hg==
- 答案:Qw==
PGRpdj4xLjA8aW1nIHdpZHRoPTEwIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzIwLzREL3JCQUNFMU1KNWVfQ2ZucURBQUFCREhfLUJPVTE5OS5wbmciPjEwPHN1cD4zPC9zdXA+a2cvbTxzdXA+Mzwvc3VwPj0xLjA8aW1nIHdpZHRoPTEwIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzIwLzREL3JCQUNFMU1KNWVfQ2ZucURBQUFCREhfLUJPVTE5OS5wbmciPjEwPHN1cD4zPC9zdXA+Zy9kbTxzdXA+Mzwvc3VwPj0xLjBnL2NtPHN1cD4zPC9zdXA+PC9kaXY+