配有观测井的量水设备，要定期清除测井杂物，疏通测井与渠道水的连通管道。
参考答案：对
86. I think this novel is suitable for you middle school students, for it is written in plain English. The underlined word means _____.
A．old
B．modern
C．simple
D．Complicated
建筑工程总承包单位按照总承包合同的约定对（）负责。
A.建设单位
B.施工单位
C.发包单位
D.业主
