矿井应有两回路电源线路,当任一回路发生故障时,另一回路应能满足通风、排水、提升的要求 发布时间:2018-09-28 06:12 │ 来源:www.tikuol.com 题型:判断题 问题: 矿井应有两回路电源线路,当任一回路发生故障时,另一回路应能满足通风、排水、提升的要求。
题型:判断题 完形填空。 Sam and Pat are 1 . They're in 2 class. Sam works harder and studies better 3 Pat. One day the teacher asks the students 4 a composition. The name of the composition is "My mother". Sam 5 a composition and is going to hand it to the teacher. Pat says, "Sam, let me have 6 ." Pat reads it and copies it. The 7 day, the teacher asks Pat," 8 is your composition just as 9 , Pat?" "Because we have the same 10 ." Says Pat. ( )1. A. sisters ( )2. A. one ( )3. A. with ( )4. A. to write ( )5. A. copies ( )6. A. drink ( )7. A. this ( )8. A. Why ( )9. A. Sam ( )10. A. brother B. friends B. the same B. as B. write B. writes B. a good time B. that B. What B. Sam’s B sister C. brothers C. a C. like C. writes C. reads C. a walk C. next C. Which C. Sams C. uncle D. girls D. a different D. than D. writing D. makes D. a look D. another D. Whose D. Sams’ D. mother 查看答案
题型:判断题 如图甲所示,光滑水平面上放置一条长度L=10m的绳AB.在t=0时刻,绳的两端A、B均在相同的外界驱动力作用下沿水平方向开始做简谐振动,绳端A、B点的振动图象均如图乙所示.已知简谐横波在绳上传播速度v=2m/s,关于AB绳的中点P的振动情况,下列说法中正确的是( )A.P点始终是加强点B.P点时而加强,时而减弱C.t=3s时,位移y=20cmD.t=4s时,位移y=20cm 查看答案
题型:判断题 足月妊娠患者临产确诊阑尾炎后,宫颈开大5cm,S,最佳处理方案()A.等待 * * 自然分娩, * * 分娩后行阑尾切除术B.立即行剖宫产,同时行阑尾切除术C.如无剖宫产指征,加强产力,缩短产程,分娩后尽早行阑尾炎手术D.如无剖宫产指征,加强产力,缩短第二产程,分娩后如阑尾病情较轻则采用保守治疗E.保守治疗阑尾炎同时等待 * * 自然分娩 查看答案
题型:判断题 患者男性,30岁,风湿性心脏病史8年,1个月前有上感病史,近1个月反复间断发热、咽痛,近1周感心悸、胸闷、劳累加重伴乏力、多汗。查体:面色苍白,上肢可见瘀点,心尖部闻及乐音样收缩期杂音首先应考虑的诊断是().A.风湿性心脏病合并甲状腺功能亢进B.风湿性心脏病合并贫血C.风湿性心脏病合并急性感染性心内膜炎D.风湿性心脏病合并亚急性感染性心内膜炎E.风湿性心脏病合并二尖瓣脱垂 查看答案