初次沉淀池按(),有平流、辐流和竖流三种形式。A.池子的结构; B.水流的方向; C

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问题:

初次沉淀池按(),有平流、辐流和竖流三种形式。

A.池子的结构;

B.水流的方向;

C.池子的容积;

D.水流的速度。

考点:污水处理工考试污水处理高级工考试污水处理高级工考试题库
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阅读理解。(10’)

Mrs. Brown’s old grandfather lived with her and her husband. Every morning he went for a walk in the park and came home at half past twelve for his lunch .

But one morning a police car stopped outside Mrs. Brown’s house at twelve o’clock, and two policemen helped Mrs. Brown to get out . One of them said to Mrs. Brown . “ The poor old man lost his way in the park and phoned to us for help , so we sent a car to bring him home . “ Mrs. Brown was very surprised , but she thanked the policemen and they left .

“ But , grandfather , ”she then said “ you have been to that park nearly every day for twenty years . How did you lose your way there ?”

The old man smiled , closed one eye and said , “ I didn’t quite lose my way , I just got tired and I didn’t want to walk home !”

根据短文内容,选择最佳答案。

小题1:The old man lived _______

A.by himself

B.with his grandfather

C.with his grandson

D.with his granddaughter and her husband小题2:The old man _____ in the park in the morning every day .

A.went fishing

B.went for a walk

C.did some reading

D.asked a policeman for help小题3: The old man went to the park for a walk __________.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

A.in the morning

B.in the afternoon

C.at half past twelve

D.twice a day小题4: The old man had been to the park every day for ______ .

A.twelve years

B.twenty weeks

C.twelve months

D.twenty years小题5: It is true that the old man ______

A.was too tired to walk home

B.lost his way home

C.lost his way to the park

D.liked to telephone the policemen .

题型:单项选择题

A.

B.

C.

D.

题型:单项选择题

主港高潮潮高3.7m,并设:

则与所给主港潮高对应的主附港潮高差为()。

 A.+0.2

B.+0.3

C.+0.4

D.+0.5

题型:单项选择题

将研究对象按随机原则分为实验组和对照组的研究计划是()。

A.准实验研究计划

B.自身前后对照比较计划

C.配对研究计划

D.前瞻研究计划

E.实验研究计划

题型:单项选择题

逻辑设计的主要工作是:()。

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