三相鼠笼式异步电动机在带动恒定负载转矩时,若电源电压下降,其电流将()。A、增大B、 发布时间:2019-01-10 20:02 │ 来源:www.tikuol.com 题型:单项选择题 问题: 三相鼠笼式异步电动机在带动恒定负载转矩时,若电源电压下降,其电流将()。A、增大B、减小C、不变D、为零
题型:单项选择题 男性,38岁,高处坠落后1小时入院。查体;意识清楚,血压90/60mmHg,上腹部轻度压痛,无明显反跳痛、肌紧张,左右下腹诊断性腹腔穿刺均阴性,腹部B超:少量腹水,上腹中央腹膜后积液。本患者应如何处理A.补液,输血,同时急诊手术探查B.补液,输血,预防应用抗生素C.保守治疗,定期复查腹部B超D.行MRI检查E.补液输血,应用止血药物,留观 查看答案
题型:单项选择题 35.—Why didn't you ask him for help? —______, but he was working on his computer.A.I had wantedB.I had wanted toC.It's hard to sayD.Don't mention it 查看答案