伸缩门利用了平行四边形容易变形的性质.______.(判断对错)

题型:解答题

问题:

伸缩门利用了平行四边形容易变形的性质.______.(判断对错)

考点:平行四边形的特性
题型:解答题

一大一小两个齿轮,大齿轮有132个齿,小齿轮有48个齿,从咬合的任意一对齿开始转动,到再次咬合。大、小齿轮各需转多少圈?

题型:解答题

阅读理解。

     A sign showing a no kissing area is pictured at Warrington Bank Quay train station in Warrington.

     Passengers have been told: if you want to get up to that kind of business, do it in the car park.

     The sign has gone up at the drop-off point at Warrington Bank Quay station in the town of Warrington,

between Liverpool and Manchester in northwest England.

     A similar sign, this time permitting kissing, has been put up elsewhere in an area where kissing is

considered bearable.

     "We have not forbidden kissing in the station," said a spokesman for operators Virgin Rail.

     "But we have put the sign up at the drop-off point because it is not a very big area and it often gets busy

with lots of traffic."

     "The sign is a light-hearted way of getting people to move on quickly."

     "If people wish to spend a little more time with their loved ones before they leave, then they should park

in the short-stay car park nearby."

     However, one station is trying to rescue love from the tracks.

     High Wycombe, northwest of London, is having none of it and is actively encouraging passengers to enjoy

it.

     "Kissing is welcome here!... we would never dream of banning kissing," says a poster of a cartoon couple

embracing (拥抱), circled by a pink heart.

     "Railway stations are romantic places," insisted Kirsteen Robertson from Chiltern Railways.

     "They are where fond farewells (告别) take place, where relationships start with a glance and even, in the

case of our Marylebone station last November, where one passenger will suggest to another over the public

address system."

     "So our passengers are more than welcome to share a kiss in our stations."

1. The sign put up at the drop-off point was to ____.

A. blame lovers saying goodbye there

B. avoid the crowdedness of the station

C. advise passengers to slow down

D. let passengers share a kiss at the station

2. We can infer from "having none of it" that ____.

A. the station refuses to accept it

B. the station welcomes it

C. the station considers it unbearable

D. the station forbids it

3. According to Kirsteen Robertson, ____.

A. love from the tracks really sounds reasonable

B. fond farewells are not allowed at the station

C. it's better to go to the car park to stay with lovers

D. signs at Warrington Bank Quay station are useful

题型:解答题

实现字符串Unicode编码方式与州SI编码方式相互转换的函数是( )。

A.Str

B.Sbconv

C.Trim

D.Mid

题型:解答题

婴儿期是指

A.1~3周岁
B.从出生到满1周岁
C.生后2周岁以内
D.生后2个月到1周岁
E.生后脐带结扎到1周岁

题型:解答题

企业实现的净利润应按照有关规定进行分配,其分配顺序正确的是( )。

A.弥补以前年度亏损-可供投资者分配的利润-可供企业分配的利润-未分配利润

B.可供投资者分配的利润-可供企业分配的利润-弥补以前年度亏损-未分配利润

C.可供企业分配的利润-可供投资者分配的利润-弥补以前年度亏损-未分配利润

D.弥补以前年度亏损-可供企业分配的利润-可供投资者分配的利润-未分配利润

更多题库