并列运行的各除氧器其汽侧应装设（）管，水侧装设（）管，以使并列运行的各除氧器的压力、（）稳定一致。
参考答案：汽平衡；水平衡；水位
His family members gave some examples of ______ his drinking and smoking had affected the family. [ ]
A. that
B. what
C. how
D. whether
档案整理工作的基本内容包括()
A、区分全宗
B、归档
C、立卷
D、登记
