问题
单项选择题
泵效越低，产生同样的流量和扬程时，消耗的（）越大。
A、材料
B、电量
C、物资
D、压力
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
泵效越低，产生同样的流量和扬程时，消耗的（）越大。
A、材料
B、电量
C、物资
D、压力
参考答案：B
完形填空（共20题，每小题1.5分，满分30分） 阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项（A、B、C和D）中，选出最佳选项，并将答案填入答题卡中。 When I was younger, I belonged to a club that did community service work. There was one specific event that was 36 for me. We spent four hours handing out warm dinner to the homeless in the streets. After that we went to a(n) 37 shelter. I was in high school at the time and my sister was too 38 to take part. She wanted to 39 , so she made sixty cookies for us to take and 40 to people. When we got to the homeless shelter we passed out the remaining 41 we had left. Next, we began making sandwiches and pairing them with other goodies(好吃的东西)and 42 them with the crowd. I had the cans with my sister’s cookies in them and began to walk around, offering them to anyone near me. I 43 an older gentleman and said, “Sir, would you like a 44 ?”He stopped and turned around, 45 ，“What did you say? Did you call me sir?” And I told him I had, and his eyes watered a little bit and he said, “No one has ever called me sir. 46 ” It 47 me to the core（彻底地）. I explained I had been taught that everyone deserved respect. It 48 me to think that just because he was homeless, no one afforded him the 49 which every person should get. It broke my 50 , and I couldn’t help but cry. I just didn’t understand 51 no one ever called him sir. Just because he didn’t have money or a place to live in. Every single person 52 to be treated with dignity(尊严). Years later, I 53 carry that memory and the lessons it taught me. Sometimes, what we take for granted as 54 gestures can really make a(n) 55 in someone’s life.
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