问题 问答题 简答题

为什么要定期冲洗水位计?如何冲洗?

答案

参考答案:

冲洗水位计是为了清洁水位计的云母片或玻璃管,防止汽或水连通管堵塞,以免运行人员误判断而造成水位事故。冲洗水位计的步骤如下:

(l)先将汽水侧二次门关闭后,再开1/4~1/3圈,然后开启放水门,进行汽水管路及云母片的清洗。

(2)关闭汽测二次门进行水侧管路及云母片冲洗。

(3)关水侧二次门,微开汽侧二次门,进行汽侧及云母片冲洗。

(4)微开水侧二次门,关放水门,水位应很快上升,并轻微波动,指示清晰,否则应重新冲洗一次。

(5)将汽水侧二次门全开,并与另一只水位计对照,指示相符。

(6)冲洗水位计时间不应过长,并防止水位计中保护弹子堵塞。

完形填空

In the summer vacation of 1997 , I was fixed with a job . I worked as a(n)     36   at Mr. Breen’s fruit shop .The fruit shop did    37    business . Most of the trade came from the housewives who lived in the neighbourhood,     38    he also had regular customers who arrived outside the shop in cars . Mr Breen    39    them all by name and they sometimes even had their order already made up , always     40   me to carry it out to their car . They were clearly long-standing customers , and I    41    they must have stayed faithful to him   42     he had promised to sell good quality     43   . He had a way with them —I had to   44     that . He called every woman “madam” for a start ,    45    those who clearly were not, but when he     46   it , it did not sound like flattery (奉承). It just sounded     47   in an old-fashioned way . He was a great chatter     48   . If he did not know them , he would greet them with a few    49    about the weather ,     50   he did , he would ask about their families or make    51    , always cutting his cloth    52    his customers . Whatever their bills came to , be     53   gave them back the few odd pence (零钱), and I am sure they thought he was very generous (慷慨). But I thought he was the opposite . He never    54    anything away . He was always looking for     55   for nothing .

36.A.operator        B.assistant      C.waiter              D.secretary

37.A.good           B.poor        C.big                 D.usual

38.A.so                 B.when          C.therefore          D.but

39.A.sold           B.knew          C.gave          D.sent

40.A.making        B.letting       C.getting             D.keeping

41.A.wish          B.insist         C.declare        D.suppose

42.A.when         B.if              C.because            D.though

43.A.food          B.fruit            C.vegetables   D.drink

44.A.admit         B.expect         C.announce   D.promise

45.A.yet            B.only            C.just                D.even

46.A.told           B.said                C.spoke        D.talked

47.A.serious          B.strange        C.polite             D.familiar

48.A.as well          B.as usual     C.either             D.also

49.A.sayings          B.questions   C.words        D.speeches

50.A.and then        B.and so       C.even if            D.but if

51.A.preparations   B.jokes           C.repairs       D.friends

52.A.according to   B.due to                C.instead of  D.up to

53.A.never           B.ever            C.seldom             D.always

54.A.took          B.moved       C.threw       D.turned .

55.A.something      B.anything      C.somebody  D.anybody

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