问题
填空题
摩擦角是当静摩擦力下达到（）时，全反力与支承面的（）线的夹角。
答案
参考答案：最大值、法
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摩擦角是当静摩擦力下达到（）时，全反力与支承面的（）线的夹角。
参考答案：最大值、法
| 从方框中选择正确的单词填空，使短文连贯完整。 | |
doctor examined(检查)her and asked her some 2 .Then the doctor said she was not very 3 .The doctor gave her some medicine andasked her to take it three 4 a day. And the doctor gave her 5 suggestions, too. Shecan't watch TV 6 play computer games too much. She needs to exercise 7 . She can't go to bed too 8 .She needs to get up early and 9 some sports every day, like 10 and walking. These can help her to keep in good health. |