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I’m not in the least tired I’m too tired to move I’m not a little tired I’m a bit tired
before; where before; which since; when since; where
I1：I2=3：4 I1：I2=4：9 将A1、A2换成理想电压表，其示数之比为3：5 将A1、A2换成理想电压表，其示数之比为1：1
which what that which that what
to; by by; to for; to in; on
would should have to might
as tiring a day as as a tiring day tiring as a day as day as a tiring as
nowhere near enough near enough nowhere enough near nowhere near nowhere enough
电压表V.示数减小 电流表A.示数减小 电路的总功率增大 变阻器R.1的取值越小，电表示数变化越明显
质点P.将向上运动 电流表读数减小 电压表读数减小 R3上消耗的电功率增大
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