问题
单项选择题
测压管水头中的压力应为（）。
A.绝对压力
B.大气压力
C.表压力
D.真空
答案
参考答案：C
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测压管水头中的压力应为（）。
A.绝对压力
B.大气压力
C.表压力
D.真空
参考答案：C
Many Tuesday mornings. I have coffee with my father. Although my father is a man of few words, I really 1 the time along with him. One recent Tuesday, I found it a bit 2 when I rang the doorbell, no one seemed to be home. I climbed in through the window, noticing the lights that shone from the kitchen, and 3 that my dad must be there, but he wasn’t. I 4 through his home, checking every room. I tried not to 5 . Yet, upstairs, downstairs, no Dad anywhere. I was worried . 6 , my father was seventy-one years old. Anything could have happened to him. Then, I got in my car and drove to my mother’s aerobics（有氧运动）class. On the drive, I thought a lot about my father and our 7 together. Suddenly, I was three years old and he was 8 me up to the living room window to see the Christmas lights. In his 9 , I was safe and secure. At age ten, he used to wake me up with warm breakfast in bed. Then I was twelve and my dad was 10 all the kids at my birthday party with his magic tricks. I was so 11 of my father for being so 12 and talented. He’d made my party a 13 . As I entered my mother’s class. I was nervous. My mom looked at me in 14. “Mom, where’s Dad?” I asked, “He’s working in the 15 on the side of the house!” she answered. And I hurried to my car and 16 back to the yard. “Hey, Dad!” I yelled out and told him about my fears of the last half hour. My dad 17 laughing his typical laugh that was always 18 . I was so thankful that I still had my daddy. And so , as I 19 the door to my father’s house, we went inside for our usual cup of coffee. Thanks, Daddy, for all the 20 and more importantly, for all your love.
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