挑战习题
1
/5
单选题
难度:
1.在国际单位制中,质量的基本单位是()
A
N
B
kg
C
m
D
s
提示1:
TuaYr+eJm+mhv+eahOespuWPt++8jOeJm+mhv+aYr+WKm+eahOWNleS9je+8mw==
提示2:
beaYr+exs+eahOespuWPt++8jOexs+aYr+mVv+W6pueahOWNleS9je+8mw==
提示3:
c+aYr+enkueahOespuWPt++8jOenkuaYr+aXtumXtOeahOWNleS9je+8mw==
正确答案:
Qg==
QeOAgU7mmK/niZvpob/nmoTnrKblj7fvvIzniZvpob/mmK/lipvnmoTljZXkvY3vvJs8YnI+QuOAgWtn5piv5Y2D5YWL55qE56ym5Y+377yM5Y2D5YWL5piv6LSo6YeP55qE5Y2V5L2N77ybPGJyPkPjgIFt5piv57Gz55qE56ym5Y+377yM57Gz5piv6ZW/5bqm55qE5Y2V5L2N77ybPGJyPkTjgIFz5piv56eS55qE56ym5Y+377yM56eS5piv5pe26Ze055qE5Y2V5L2N77ybPGJyPuaJgOS7pemAieaLqULjgII=
2
/5
单选题
难度:
2.感受身边物理,质量是200g的物体是()
A
一本书
B
一张课桌
C
一支铅笔
D
一个中学生
提示1:
6K++5qGM5ZyoMTBrZ+S7peS4ig==
提示2:
6ZOF56yU55qE6LSo6YeP6L+c5bCP5LqOMjAwZw==
提示3:
5Lit5a2m55Sf55qE6LSo6YeP6L+c6L+c5aSn5LqOMjAwZw==
正确答案:
QQ==
6LSo6YeP5pivMjAwZ+eahOeJqeS9k+S4juS5puacrOi0qOmHj+ebuOi/ke+8m+i/nOWwj+S6juivvuahjO+8jOivvuahjOWcqDEwa2fku6XkuIrvvJvpk4XnrJTnmoTotKjph4/ov5zlsI/kuo4yMDBn77yb5Lit5a2m55Sf55qE6LSo6YeP6L+c6L+c5aSn5LqOMjAwZ++8m+aJgOS7peetlOahiOmAiUHjgII=
3
/5
单选题
难度:
3.下列单位换算正确的是( )
A
1.32kg=1.32kg×1000=1320g
B
1.32kg=1.32×1000kg=1320g
C
1.32kg=1.32×1000g=1320g
D
1.32kg=1.32×1000=1320g
提示1:
5oqK5ZCO6Z2i55qE5Y2V5L2N6L+b6KGM5o2i566X5Y2z5Y+v
正确答案:
Qw==
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
4
/5
单选题
难度:
4.下列质量中,最小的是( )
A
1.19×10
-7
t
B
125mg
C
0.13g
D
0.00012kg
提示1:
5bCG5omA5pyJ55qE6YCJ6aG55o2i566X5oiQ5ZCM5LiA5Y2V5L2N77yM5YaN6L+b6KGM5q+U6L6D
正确答案:
QQ==
QeOAgTEuMTnDlzEwPHN1cD4tNzwvc3VwPnQ9MS4xOcOXMTA8c3VwPi03PC9zdXA+w5cxMDxzdXA+Njwvc3VwPmc9MC4xMTln77ybPGJyPkLjgIExMjVtZz0wLjEyNWfvvJs8YnI+Q+OAgTAuMTNn77ybPGJyPkTjgIEwLjAwMDEya2c9MC4wMDAxMsOXMTAwMGc9MC4xMmfvvI48YnI+4oi1MC4xMTln77ycMC4xMmfvvJwwLjEyNWfvvJwwLjEzZ++8jDxicj7iiLRB6YCJ6aG555qE6LSo6YeP5pyA5bCP77yOPGJyPuaVhemAiUHvvI4=
5
/5
单选题
难度:
5.北京时间3月24日,2008年北京奥运会的圣火在希腊古奥林匹亚遗址点燃。如图1,罗雪娟是首位进行北京奥运会火炬传递的中国火炬手,她手握 “祥云”火炬的质量是985
A
t
B
kg
C
g
D
mg
提示1:
5YWI5aSn57qm5Lyw6K6h54Gr54Ks55qE6LSo6YeP77yM57qm5Li6MWtn
正确答案:
Qw==
5YWI5aSn57qm5Lyw6K6h54Gr54Ks55qE6LSo6YeP77yM57qm5Li6MWtnPGJyPuaJgOS7pemAiUNn5Li65Y2V5L2N