皮皮学，免费搜题
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【简答题】
Computer (1) and ertrepreneur Damir Sabol has created (2) to scan mathematical equations and returning results within seconds. But the app, called PhotoMath, does much more than that, he says. The students can (3) in their textbooks. They can caculate quickly and get the result fast, and see whether they did it right or not, but they can also get all the steps used to solve math problems. So it's not just a matter of getting results, (4). And we offer the entire process, step by step, along with explanations of what is being done. So for someone who is alone with a textbook, (5) and doesn't know what to do, our app can help them in many cases,” he says.
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皮皮学刷刷变学霸
举一反三
【单选题】党员的义务之一是党员要自觉遵守党的纪律，模范遵守国家的法律法规，严格保守党和国家的秘密，执行党的决定，服从()，积极完成党的任务。
A.
大局需要
B.
组织分配
C.
集体利益
D.
上级领导
【简答题】产生应力腐蚀的三个条件为 、 和 。