Where do you work now? I work in a cinema .
Where do you study now? I work at Sunny School
hū
róng
shú
yú
qiáo
xīn
____唤
小____
____悉
____笨
____悴
温____
如图所示的电路中,电阻R1的阻值为10Ω。闭合开关S,电流表A1的示数为0.6A,电流表A2的示数为0.4A,则电阻R2的阻值为____ Ω。若电流表A1发生短路,则电流表A2的示数将____ 。(填“不变”、“变大”或“变小”)
下列关于生物类群及主要特征连线错误的是( )