油浸电力变压器安装程序中,绝缘判断工作应在()前进行。 A.设备就位 B.器身检查 发布时间:2019-01-11 21:32 │ 来源:www.tikuol.com 题型:单项选择题 问题: 油浸电力变压器安装程序中,绝缘判断工作应在()前进行。A.设备就位B.器身检查C.附件安装D.密封检验
题型:单项选择题 如图所示,匀强电场方向沿x轴的正方向,场强为E。在点有一个静止的中性微粒,由于内部作用,某一时刻突然分裂成两个质量均为m的带电微粒,其中电荷量为q的微粒1沿y轴负方向运动,经过一段时间到达点。不计重力和分裂后两微粒间的作用。试求 (1)分裂时两个微粒各自的速度; (2)当微粒1到达(点时,电场力对微粒1做功的瞬间功率; (3)当微粒1到达(点时,两微粒间的距离。 查看答案
题型:单项选择题 根据句意、汉语或首字母提示以适当形式填写正确的单词。fly teacher miss heavy he1. In China, September 10th is _____ Day. 2. When Jack came to himself, he was lying in a street and his purse was _____.3. Because it rained _____, many planes were late. 4. Did Mr Black enjoy _____ in the Summer Palace yesterday? 5. After a five-day _____, Shenzhou VI manned spaceship landed safely in Inner Mongolia (内蒙古), China on October 17th, 2005. 查看答案
题型:单项选择题 女,65岁,冠心病心绞痛史8年,无高血压史,夜间突发心前区疼痛8小时入院。入院时血压为150/90mmHg(20/12kPa),经心电图检查,诊断急性前壁心肌梗死起病4周后,病人反复低热,左肺底部有湿性啰音,心前区闻及心包摩擦音,此时应考虑并发()A.肺部感染B.急性心包炎C.感染性心内膜炎D.心肌梗死后综合征E.肺栓塞 查看答案