[填空题]
Suppose that you wish to apply a 0.25-V pb1k 2u/0xjcl g zkly0ggyiud*/:h/8motential difference between w/t t6ff9u 2yncf37extwo points on the human body. The resistance iw7tu/ffcf 62ty93 nxes about $2000\Omega$, and you only have a 9.0-V battery. How can you connect up one or more resistors to produce the desired voltage? k$\Omega$
