作为中间产品的燃料油,虽然不计算其产量,也要计算其消费量。 ()
参考答案:错
根据句意及首字母提示填入适当的词。
1. He should be a_______ to come into the room.
2. He is s_______ because he often does foolish things like this.
3. He often c_______ with his friends on the Internet.
4. I want to be a v_______ in the Olympic Games 2008 of Beijing.
5. Marry has her ears p_______. She wants to wear earrings.
如图所示,是探究“动能的大小与哪些因素有关”的实验:
(1)将A、B两球(mA>mB)分别从两斜面的相同高度处由静止同时释放,则在水平面的初速度VA______VB(选填“大于”“等于”“小于”)
(2)实验中通过观察纸盒被推动的距离的大小,可以比较A、B两个小球的______ 的大小.
(3)将(甲)与(丙)两实验比较可知,小球动能的大小与小球的______有关.
(4)比较(甲)与(乙)两实验可得实验结论:______
(5)例举一个与本次实验采用相同实验方法的例子______.
(6)若水平面非常光滑会有什么情况?______.