在如图所示的电路中,电源电压保持不变,当开关S闭合,甲、乙两表为电压表时,两表的示数之比U甲:U乙=5:4,则R1:R2= ____;当开关S断开,甲、乙为电流表时,两表示数之比是I甲:I乙= ____
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zī
méng
róu
chén
____询
____胧
____搓
____设
——Do you know the latest information about Flight MH370?——I've no idea. Let's ________ the TV to watch the news programme.