【单选题】实例分析: 有一仪器中的电路如图 1 所示,其中 M 是质量较大的一个金属块,两端与弹簧相连接,将仪器固定在一辆汽车上,当汽车启动时,哪只灯亮?当汽车急刹车时,哪只灯亮?为什么? 以上实例符合提问技能的措词要素的哪个特征?( )
A.
措词必须科学准确,能明确问题的物理情境和条件
C.
问题的措词应在不失科学性的要求下,尽可能通俗易懂,适合学生的理解水平
【简答题】连接电路时,图中导线a端应与电压表上标有数字“______ ”(选填“3”或“15”)的接线柱相连.此题出自2015年贵州六盘水中考物理真题及答案 ,2015年贵州省六盘水市中考物理试卷 26.图甲是“测量小灯泡功率”实验电路,电源电压3V,小灯泡的额定电压为2.5V. (1)连接电路时,图中导线a端应与电压表上标有数字“______ ”(选填“3”或“15”)的接线柱相连. (2)闭合开关前,应...
【简答题】One day, Jack’s parents told him that his grandpa would retire(退休) after working for forty years. Jack said in surprise, “I’m only seven, so it means Grandpa has been… er … A really long time!” His pa...
【简答题】阅读理解。 One day, Jack's parents told him that his grandpa would retire(退休) after working for forty years. Jack said in surprise, 'I'm only seven, so it means Grandpa has been… er … A really long t...
【简答题】在测定“小灯泡电功率”的实验中,小灯泡额定电压为2.5V。图甲是某同学没有连接完的实物电路。 甲 乙 丙 (1)请你用笔画线代替导线,帮他将实物电路连接完整; (2)小叶同学闭合开关,移动滑片P到某一点时,电压表示数(如图乙所示)为 V,若他想测量小灯泡的额定功率,应将图甲中滑片P向 ____ (选填“A”或“B”)端移动,...
【简答题】One day, Jack’s parents told him that his grandpa would retire(退休) after working for forty years. Jack said in surprise, “I’m only seven, so it means Grandpa has been…er…. A really long time!” His par...
【单选题】His grandpa______for two years.
【简答题】阅读理解。 One day, Jack's parents told him that his grandpa would retire (退休) after working for forty years. Jack said in surprise, 'I'm only seven, so it means Grandpa has been...er.., A really long time...
【单选题】---Can you guess the new Nike sports shoes? ---Yes. Maybe he asked his grandpa to pay for them, I think.
【简答题】One day, Jack’s parents told him that his grandpa would retire (退休) after working for forty years. Jack said in surprise, “I’m only seven, so it means Grandpa has been … err… A really long time!” His ...