冬季怎样置换带水和己烷的管线？

水泥车是专供油、气井进行（）、冲洗的特种车辆，是重要的循环设备.

卫氏并殖吸虫的第二中间宿主是（）

A.淡水鱼虾

B.水红菱

C.青蛙

D.淡水溪蟹、石蟹

E.川卷螺

阅读以下说明，回答问题1～问题3，将解答填入答题纸对应的解答栏内。
[说明]
假设某公司被分配了一个C类地址，网络号是202.128.236.0，该公司的网络拓扑结构如下图所示。其中部门A和部门B拥有的主机数不会超过25台，其他部门及分公司的主机数不会超过10台。
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请为各部门和分公司分配IP地址和子网掩码，填入下表中。要求表中子网地址从小到大进行排列，注意：该单位的路由器不支持全0子网和全1子网。

完成句子（20分）

小题1:政府已经把这片地方变成一个公园。

The government has _________the place _________ a park.

小题2:我父亲过去常常骑自行车上班。My father  ________  _____ go to work by bike.

小题3:自从2002年，一个新的火车站就已经投入使用。

A new railway station has been _______  _________ since 2002.

小题4:电视打开了。 The TV is _________.

小题5:春天是参观中国园林的最好季节。

Spring is the _________ _________ to visit Chinese gardens.

小题6:When you have got enough points, a cloud will come down and carry you off to a place you have never visited before.

______________________________________________________________________________.

小题7:It was really wonderful to have a bird’s-eye view of Hong Kong.

______________________________________________________________________________.

小题8:The conference has been over since last Sunday.

_____________________________________________________________________________.

小题9:In the past, my mother took me to school. But now I come to school by bus on my own.

______________________________________________________________________________.

小题10:The government realized it was a serious problem and took action to reduce the pollution.

______________________________________________________________________________.

胎盘植入的处理：

A．子宫切除术

B．给予氨甲蝶呤

C．人工徒手剥离胎盘

D．大号刮匙清除

E．在静脉麻醉下，手取胎盘