[填空题]
For a 120-V rms 60-Hz voltage, an r,hf fjxd1bg3 jwb;5 y586txdkms current of 70 mrnbb/2xb ,ai /A passing through the human body for 1.0 s could be lethal. What must be the impedance of the body fo/bxb2nab i/r,r this to occur? $ \times10^{3 }\;\Omega$
