①此时小灯L____(选填“一定发光”、“一定不发光”或“可能发光”).
②将电流表A与R位置互换后,电压表V的示数不发生变化,电路中可能存在的故障是(写出所有可能故障)____.
“北通涿郡之渔商,南运江都之转输,其为利也博哉!”该材料赞誉的水利工程是( )
—Oh, my God! It's really heavy. I can't imagine how big it is! Is it an adult elephant?
我会给下面的字、词编谜语
耳朵:____。眼睛:____。王:____。