本课配套习题挑战模式1/5
单选题
难度系数:
1.在物理实验室中,测量物体质量的仪器是()
A: 弹簧测力计 |
B: 量筒 |
C: 压强计 |
D: 天平 |
一次做对,真牛!
+5奖励规则>
- 提示1:5by557Cn5rWL5Yqb6K6h55So5piv55So5p2l5rWL5Yqb55qE5aSn5bCP
- 提示2:6YeP562S55So5p2l5rWL5ray5L2T55qE5L2T56ev
- 提示3:5Y6L5by66K6h55So5p2l5rWL5Y6L5by6
- 答案:RA==
5by557Cn5rWL5Yqb6K6h55So5piv55So5p2l5rWL5Yqb55qE5aSn5bCPPGJyPumHj+etkueUqOadpea1i+a2suS9k+eahOS9k+enrzxicj7ljovlvLrorqHnlKjmnaXmtYvljovlvLo8YnI+5aSp5bmz55So5p2l5rWL6LSo6YeP77yM5omA5Lul6YCJRA==
本课配套习题挑战模式2/5
单选题
难度系数:
2.想测一张邮票的质量,下列方法中最理想的是( )
A: 将一张邮票直接测量 |
B: 测100张相同邮票的质量,再除以100 |
C: 测螺帽与一张邮票的总质量再减去测得的螺帽质量 |
D: 测5张邮票质量,再除以5 |
一次做对,真牛!
+5奖励规则>
- 提示1:55Sx5LqO5LiA5byg6YKu56Wo55qE6LSo6YeP5aSq5bCP77yM5LiN5Y+v6IO955So5aSp5bmz55u05o6l5rWL6YeP
- 提示2:55Sx5LqO5LiA5byg6YKu56Wo55qE6LSo6YeP5aSq5bCP77yM5omA5Lul5rWL6J665bi95LiO5LiA5byg6YKu56Wo5oC76LSo6YeP5LiO5rWL6J665bi955qE6LSo6YeP5beu5Yir5LiN5aSn
- 答案:Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数:
3.一架JPT-5型托盘天平,全部砝码为10g一只,20g二只,50g一只,100g二只、200g一只,现在用它称量质量为275g的物体,称量时下列四种加减砝码的顺序最为合理的是(“+”号表示在右盘中加入砝码,“-”号表示取去砝码)( )
A: +200g+100g-100g+50g+20g+10g-10g+游码 |
B: +100g+100g+50g+20g+10g-10g+游码 |
C: +200g+50g+20g+游码 |
D: +200g+10g+20g+20g+10g+游码-游码-20g-10g+50g-10g+游码 |
一次做对,真牛!
+5奖励规则>
- 提示1:5oyJ54Wn55Sx5aSn5Yiw5bCP55qE6aG65bqP5L6d5qyh6K+V5Yqg56Cd56CB
- 答案:QQ==
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
本课配套习题挑战模式4/5
单选题
难度系数:
4.一个人在用天平测量物体的质量的时候,不小心把被测物体放到了右盘,砝码放到了左盘,砝码有50g一个,20g两个,游码刻度是3g.该物体的质量是( )
A: 90g |
B: 93g |
C: 87g |
D: 73g |
一次做对,真牛!
+5奖励规则>
- 提示1:54mp5L2T55qE5oC76LSo6YeP5Li656Cd56CB55qE6LSo6YeP5Yqg5LiK5ri456CB55qE5Yi75bqm5omA6KGo56S655qE6LSo6YeP
- 答案:Qw==
56Cd56CB6LSo6YePNTBnKzIwZysyMGc9OTBn77yM5pWF5pyJOTBnPW08c3ViPueJqTwvc3ViPisyLjJn77yM5omA5LulbTxzdWI+54mpPC9zdWI+PTkwZy0zZz04N2fvvI48YnI+5pWF6YCJQ++8jg==
本课配套习题挑战模式5/5
单选题
难度系数:
5.一架天平,砝码已严重磨损,用此天平和砝码去测得一物体的质量,其结果将会( )
A: 偏小 |
B: 偏大 |
C: 不变 |
D: 无法判断 |
一次做对,真牛!
+5奖励规则>
- 提示1:56Cd56CB6KKr56Oo5o2f5ZCO6LSo6YeP5YeP5bCP
- 答案:Qg==
56Cd56CB6KKr56Oo5o2f5ZCO6LSo6YeP5YeP5bCP77yM5Zug5q2k6KaB5L2/5aSp5bmz5bmz6KGh77yM5bCx6ZyA6KaB5re75Yqg5pu05aSa55qE56Cd56CB5oiW5bCG5ri456CB5ZCR5Y+z56e75Yqo77yM5LuO6ICM5L2/5rWL6YeP57uT5p6c5q+U55yf5a6e5YC85aSn77yOPGJyPuaVhemAiULvvI4=