下列工业管道工程一般施工程序中，正确的是（）。
A.管道与设备连接→仪表安装→调试与试运行
B.仪表安装→试压及清（吹）洗→防腐与保温
C.管道敷设→管道与设备连接→防腐与保温
D.管道与设备连接→试压及清（吹）洗→防腐与保温
参考答案：B
解析：工业管道安装工程一般施工程序是：安装施工前准备→……→管道敷设及安装→管道与设备连接→仪表安装→试压及清（吹）洗→防腐与保温。所以B为正确选项
Directions: There are 10 blanks in the following passage. For each numbered blank, there are 4 choices marked A, B, C and D. Choose the best one and mark your answer on the ANSWER SHEET with a single line through the center.
| I found, while thinking about the far-reaching world of the creative black woman, that often the truest answer to a question that really matters can be found very close. In the late 1920s, my mother ran away from home to (51) my father. Marriage, if not running away, was (52) of seventeen-year-old girls. By the time she was twenty, she had two children and was pregnant (53) a third. Five children later, I was born. And this is how I (54) to know my mother: she (55) a large, soft, loving-eyed woman who was (56) impatient in our home. Her quick, violent temper was on (57) only a few times a year, when she (58) with the white landlord who had the misfortune to suggest to her that her children did not need to go to school. She made all the clothes we wore, even my brother’s (59) . She made all the towels and sheers we used. She spent the summers canning vegetables and fruits. She spent the winter evenings making quilts (60) to cover all our beds. |
A．frequently
B．always
C．often
D．rarely