有一个电流表G,内阻=100Ω,满偏电流=3mA,要把它改装为量程0~3V的电压 发布时间:2017-05-19 14:25 │ 来源:www.tikuol.com 题型:填空题 问题: 有一个电流表G,内阻=100Ω,满偏电流=3mA,要把它改装为量程0~3V的电压表,要 联一个 Ω的电阻,改装后电压表的内阻是 Ω。
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题型:填空题 对于头发全脱的周某,王医生定取头部穴位的方法是:A.两耳尖距离酌情折算B.两耳后乳突间9寸酌情折算C.大椎到胸椎的距离酌情折算D.眉心到大椎为18寸折算E.两颧骨间与两瞳孔间距离酌情折算 查看答案