【評論主題】【題組】(b)If someone now pulls the loop directly away from the wire, at speed v，what electromotive forc

【評論內容】觀光旅館之餐廳須雇用80%以上持有中餐烹調技術士證的人

【評論主題】2.A metal sphere of radius R, carrying charge Q, is surrounded : by a thick concentric metal shell (

【評論內容】明度越高面積就要越小