问题
问答题
在图中用力的图示法画出与水平方向成30°角斜向上拉小车的力F，拉力的大小是150牛（A点为拉力的作用点）．
答案
确定标度，在拉力的方向上画一条带箭头的线段，在箭头附近标上符号F，如右图：
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在图中用力的图示法画出与水平方向成30°角斜向上拉小车的力F，拉力的大小是150牛（A点为拉力的作用点）．
确定标度，在拉力的方向上画一条带箭头的线段，在箭头附近标上符号F，如右图：
| 完形填空 | ||||
| Once upon a time there was one storyteller who wanted to search for a real-life story. He reached a village and took a cottage for rent. After 1 in the village throughout the month, the storyteller couldn't find one. 2 , he decided to stop his search. The next day, while sitting in the cottage, he suddenly heard a voice - a woman was 3 someone. The voice was coming from the big 4 behind his cottage. It sounded like the woman was abusing her 5 . The storyteller didn't like it, 6 he was happy to finally get his story. 7 the conversations each day, he added them to his story. Though he couldn't 8 the characters of his story, he started 9 the mother-in-law, as she seemed to be a bad woman. Before he finished his 10 , the storyteller wanted to see the 11 once, so he climbed the wall. There he saw the mother-in-law sitting in a 12 . It seemed that she was disabled. He saw the old lady trying to 13 a food item on the table near her wheelchair. But because of her 14 , she couldn't reach it and the daughter-in-law looked like she was enjoying the old lady's 15 nearby. Suddenly the old lady fell from the wheelchair and started 16 her daughter-in-law. The storyteller went back and 17 changed the ending of the story and was surprised at how 18 it was compared to what he once thought it would be. Truly he found both a real-life story and a real-life 19 : Never judge a situation unless you know all the aspects well. Sometimes you can't imagine your 20 from the reality. | ||||
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