造成机泵电机电流过大的外界原因是（）。A．转速降低 B．超负荷 C．机泵抽空 D．气 发布时间：2017-08-03 07:49 │ 来源：www.tikuol.com 题型：单项选择题 问题： 造成机泵电机电流过大的外界原因是（）。A．转速降低B．超负荷C．机泵抽空D．气温过高
题型：单项选择题 阅读理解。 Here is the bulletin board in Class 2. Some of the notes can be seen every day. Here are some notes before a holiday. Please read them and answer the following questions. We want to say thanks to Miss Wang, our dear teacher. We couldn't have a wonderful English class without you. Class 2I am thankful to Annie for lending me the pen. I'll remember to bring mine next time. Mary The class meeting will be held this Thursday. The topic is "Thanks a lot." Please get ready. Class 2A thousand thanks to John. He always helps me clean the windows when I am busy. JuliaMany thanks to Jack for helping with my Chinese homework. TomI'm thankful to know that I have so many kind students. I love you all. Miss Wang1. The meaning of "bulletin board" is _________. A. 广告栏 B. 寻物启事 C. 公告栏 D. 意见箱 2. When Julia was busy, what did John help her do? A. To do Chinese homework. B. To clean the windows. C. To do English homework. D. To lend her a pen. 3. What is Miss Wang? A. A Chinese teacher of Class 2. B. An English teacher of Class 2. C. A Chinese teacher of Class 3. D. An English teacher of Class 3. 4. Why did Annie lend the pen to Mary?A. Ann had too many pens.B. Mary lost her pen. C. Miss Wang asked her to do so. D. Mary forgot to bring her pen to school. 5. What holiday might be coming according to the notes on the bulletin board? A. Thanksgiving Day B. Teachers' Day C. New Year's Day D. Christmas 查看答案
题型：单项选择题 男，16岁，今日突发呼吸困难，发作前有鼻痒、喷嚏、流涕、干咳。体检：血压正常、端坐呼吸、额部出汗，双肺有哮鸣音．心率110次／分。律齐，无杂音。你认为下列哪种诊断正确（）A.上呼吸道感染B.支气管哮喘C.慢性支气管炎喘息型D.病毒性心肌炎E.急性支气管炎 查看答案
题型：单项选择题 肾脏维持水平衡的功能，主要依靠下列哪项调节活动来实现( )A．肾小球滤过量B．近端肾小管与髓袢的重吸收水量C．远端肾小管与集合管的重吸收水量D．近端肾小管与远端肾小管的重吸收水量E．肾小管的分泌功能 查看答案