计算:sin30°tan45°-cos230°tan230°. 发布时间:2017-05-07 00:07 │ 来源:www.tikuol.com 题型:解答题 问题: 计算:sin30°tan45°-cos230°tan230°.
题型:解答题 改错题。1. Is the key ring belong to Mike? 2. Here isn't bread in the bowl. 3. What's in the plate now? 4. Where other places will you visit next week? 5. There's else something to do in the hall. 6. They can wait at 10 p.m. 7. How much does it take to go from Guangdong to Shandong? 8. The museum is about forty metres far away from here. 9. Is the shop close at this time of the day. 10. I think two kilos of each are enough. ______________________________________________________________________ 查看答案
题型:解答题 列方程解应用题某水果批发商欲将A市的一批水果运往B市销售,有火车和汽车两种运输工具,运输过程中的损耗均为160元/时。其它主要参考数据如下:运输工具平均速度(千米/时)运费(元/千米)装卸费用(元)火车100181800汽车80221000 (1)如果汽车的总支出费用比火车费用多960元,你知道A市与B市之间的路程是多少千米吗?请你列方程解答。(2)如果A市与C市之间的距离为300千米,要想将这批水果运往C市销售。选择哪种运输工具比较合算呢?说明你的理由。 查看答案
题型:解答题 男性,45岁,扩张型心肌病,阵发性心房颤动,现又发作两小时,心室率120次/分,脉率80次/分,此时首选的药物是()A.毛花苷C(西地兰)B.维拉帕米(异搏定)C.β受体阻滞剂D.ACEIE.利尿剂 查看答案