问题:
[单选题]
AM=dL/dt=6tz^(N⋅m),ω=L/mR2=0.06t2(rad/s)
BM=dL/dt=4tz^(N⋅m),ω=L/mR2=0.06t2(rad/s)
CM=dL/dt=5tz^(N⋅m),ω=L/mR2=0.4t2(rad/s)
DM=dL/dt=6tz^(N⋅m),ω=L/mR2=0.4t2(rad/s)
AM=dL/dt=6tz^(N⋅m),ω=L/mR2=0.06t2(rad/s)
BM=dL/dt=4tz^(N⋅m),ω=L/mR2=0.06t2(rad/s)
CM=dL/dt=5tz^(N⋅m),ω=L/mR2=0.4t2(rad/s)
DM=dL/dt=6tz^(N⋅m),ω=L/mR2=0.4t2(rad/s)
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