EH油系统中AST电磁阀有几个？其布置形式及动作原理？

… such as making breakfast on dark, cold winter mornings for children    小题1:   and sleepy, before sending them off to school; or special occasions such as homecomings or    小题2:  .

It always    小题3:   the fullest and noisiest room in the house.

However, according to    小题4:  , the universe began with a “Big Bang” that threw matter    小题5:  .

It    小题6:  with fire and rock. They were in time to produce carbon, nitrogen, water vapor and other gases, which   小题7:  the earth’s atmosphere.

On my first morning in Toronto, I woke up early. Looking through the mist, I could just see the maple trees near    小题8:  . …After Liu Qian woke up, we went looking for    小题9:  . …We sat in a small booth to eat, enjoying the    小题10:   people around us.

中止1年的工程恢复施工前，建设单位应当报发证机关( )。

A．申请批准

B．核验许可证

C．重新办理手续

D．领取施工许可证

(二)
为了适应经济开发区规模不断扩大的需要，某市政府计划在该区内新建一座110kV的变电站。新建变电站周边居住人口密集，站址内有地下给水管道和一幢六层废弃民宅。为加强现场文明施工管理，项目部制定了相应的现场环境保护措施。主要措施如下：
措施1：施工前对施工现场的地下给水管道实施了保护措施。
措施2：为减少六层废弃民宅拆除时产生扬尘，在拆除时计划配合洒水等。
措施3：为及时清除施工中产生的固体和液体废物，计划将废线缆和设备的废油现场全部烧掉。
措施4：计划租赁的推土机和挖掘机只能夜间使用，为了防止噪声扰民，施工单位计划将噪声限值在65dB(分贝)。
问题

系统性因素引起的质量变异，一般属于（）。

A．搞清原因

B．清除隐患

C．界定责任

D．妥善处理

高压进户线管口对地面距离不应小于（）米。

A.2.7

B.3

C.3.5

D.4.5