①30S=( )=( )min ②0.2h=( )=( )S ③45min=( )=( )h ④500m=( )=( )mm请帮忙``急用`!
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①30S=()=()min②0.2h=()=()S③45min=()=()h④500m=()=()mm请帮忙``急用`!①30S=()=()min②0.2h=()=()S③45min=()=()h④5
①30S=( )=( )min ②0.2h=( )=( )S ③45min=( )=( )h ④500m=( )=( )mm请帮忙``急用`!
①30S=( )=( )min ②0.2h=( )=( )S ③45min=( )=( )h ④500m=( )=( )mm
请帮忙``急用`!
①30S=( )=( )min ②0.2h=( )=( )S ③45min=( )=( )h ④500m=( )=( )mm请帮忙``急用`!
①30s=(30/60min )=(0.5 )min
②0.2h=( 0.2*3600S)=(720)s
③45min=(45/60h )=(0.75 )h
④500m=( 500*1000mm)=(500000)mm
30/60min 0.5
0.2*60*60s 720
45/60h 0.75
500*100*10mm 800000
(1)0.5 (2)12 (3) 2/3 (4) 50000 都是最后的空
①30S=( )=( )min ②0.2h=( )=( )S ③45min=( )=( )h ④500m=( )=( )mm请帮忙``急用`!
900s= min
10s=( )min
20s=( )min
110s=?min
30r/min=____rad/s
30km/min=___m/s
30m/min= 多少 m/s
30cm/min=____m/s
20s=（）min
2.5min=多少s
物理120s= min = s
1cm/min=?m/sRT1cm/min=( )m/s
0.2min= 多少 s= 多少 ns
36 min 30 s=（ ）s=（ ）h 2.4 h=（ ）h=（ ）min
2h= min= s
1h=( )min=( )s
3.6km/s=( )m/min?