A.(50±10)N/sB.(50±5)N/sC.(2400±200)N/sD.(2400±10)N/s
A.(50±10)N/s B.(50±5)N/s C.(2400±200)N/s D.(2400±10)N/s
A.(6±1)mmB.(4±1)mmC.(28±2)mmD.(30±1)mm