问题 单项选择题

某工程承包商制定的双代号网络计划如下图所示,由9项工作组成。根据劳动力、施工机械、工作量等资源情况,确定了各项工作持续时间,合同工期为30天。

根据此双代号网络图,工作H的最早开始时间为第()。

A.16天

B.17天

C.18天

D.19天

答案

参考答案:C

解析:

本题考核的是1Z203032工程网络计划的编制方法。H工作的最早开始时间应为紧前工作完成的最大值。紧前工作D和E各自的最早完成时间为18天和16天,取大值为18天。

阅读理解

Oyster

What is an Oyster card?

Oyster is the easiest way to pay for journeys on the bus ,Tube ,tram,Docklands light Railway (DLR),London Overground and National Rail journeys in London You can store your travel cards, Bus & Tram Pass,season tickets and credit to pay for journeys as you go.

Where to get an Oyster card?

There are a number of ways for you to get an Oyster card :

•   At over 3,900 Oyster Ticket stops

•   At Tube and London Overground station ticket offices

•   At some National Rail stations

•   At London Travel information Centres

•    Online at tfl. gov. uk/oyster

How to use an Oyster card?

To pay the correct fare on the Tube ,DLR,London Overground and National Rail services,you must always touch m on the yellow Oyster card reader at the start of your journey,and touch out at the end. ff you don’t, a maximum cash Oyster fare will be changed When using the bus or tram, you must only touch in at the start, but not at the end of your journey.

What happens if I don’t visit London very often?

Don’t worry. Any pay as you go credit on your card will not expire (过期),so you can keep it for your next visit or lend it to a friend.

Fares

Traveling by Tube from Central London (Zone l)to Heathrow (Zone 6)

Adult Oyster single fare

£ 4. 20 Monday to Friday 06:30 - 09:30 and 16:00 一 19:00

£ 2. 70 at all other times including public holidays

Adult single cash fare £ 5.00

For further information,visit tfL.gov. uk /fares.

小题1:You can get an Oyster card at the following plaices EXCEPT_____

A.on the website

B.at an Oyster Ticket stop

C.at a post office

D.at a Tube station小题2:Which of the following is TRUE about Oyster cards?

A.They are limited in use to the owners themselves.

B.On National Rail services you must touch them on the reader twice.

C.They are not suitable for those who don’t visit London often.

D.Oyster card Tube fares cost more on public holidays than on weekdays.小题3:H a person with an Oyster card fakes the 7 o’clock Tube from Central London to Heathrow for a week (no public holiday in between),he should pay_____.

A.f 18.90

B.£ 29.40

C.£21.90

D.f26.40小题4:The passage is probably taken from a_______

A journal            B. travel brochure C. textbook    D. novel

填空题