过点P(2,3)引直线l,使A(2,3)、B(4,-5)到它的距离相等,则直线l

题型:填空题

问题:

过点P(2,3)引直线l,使A(2,3)、B(4,-5)到它的距离相等,则直线l的方程是3x+2y-7=0或______.

考点:两条平行直线间的距离
题型:填空题

社会主义经济制度的基础和社会主义的根本经济特征是

A.公有制经济

B.集体经济

C.混合所有制经济

D.非公有制经济

题型:填空题

Crowd controls could soon become an important skill for climbers on Mount Everest, as important as physical strength or watching the weather. In a single day last week, nearly 40 people reached the top of the world --- a record. Reports from base camp spoke of queues at dangerous ridges and crowds as people passed each other in the final dash for the 8, 848 meters top.

More traditional mountaineers tease about the circus atmosphere surrounding Everest in re­cent years, and there are warnings that the crowds are making the mountain more dangerous. In 1996, 14 died on the mountain when the members of several groups were trapped at high altitudes by sudden snowstorms. Bad weather in early May led to this year’s jam on the summit ridge, but the loss, luckily, was light. Just four climbers died, in­cluding a Nepali Sherpa who had made 11 previous successful climbing.

Traditionalists are also worried about the growing tendency of climbers to set records and achieve “firsts”, rather than simply climb the mountain. This year’s crop of mountaineers included the oldest man, 64-year-old Sherman Bull from Connecticut, and the youngest, 16-year-old Temba Tsheri Sherpa of Nepal. An American with only one arm was on the mountain this year; an Indian with no legs also tried but failed. Erik Weihennieyer, an Ameri­can, became the first blind person to reach the top of the world. His fellow climbers stayed in front of him on the way up, describing the type of land and ringing bells.

Nepal(尼泊尔)views Mount Everest as something of a cash cow. The government charges journeys a minimum of $ 70,000. That is probably why officials in Katmandu are ignoring concerns about overcrowding and talking about even more climbers coming next year. But a celebration of the 48th anniversary of the first conquest of Everest, by Sir Edmund Hillary and Sherpa Tenzing Norgay, was cancelled after violent strikes. Tumultuous(动乱的)Nepali politics, it seems, could be just the crowd-control mea­sure that Everest needs.

小题1:What is the problem that the climbers have to face in recent years?

A.Bad Weather.

B.Technology.

C.Overcrowding.

D.Physical strength.小题2:What is the main idea of the second paragraph?

A.The risks of mountain climbing.

B.The consequence of overcrowding.

C.The challenge that climbers have to face.

D.The damage that snowstorms have caused.小题3:Several climbers are mentioned in Paragraph 3 to show ______.

A.their great courage

B.their common motivation

C.their different identity

D.their outstanding achievements小题4:What is the attitude of the Nepali government towards overcrowding?

A.Unconcerned.

B.Doubtful.

C.Disapproving.

D.Worried.

题型:填空题

若有两个字符串s1="12345",s2="34",执行s=Instr(s1,s2)后,s的值为( )。

A.2

B.3

C.4

D.5

题型:填空题

国外基金直销渠道的特点不包括( )。

A.对客户财务状况更了解,对客户控制较强

B.客户可得到独立的顾问服务

C.易于建立双向持久的联系,提高忠诚度

D.推销新产品更容易

题型:填空题

肘关节摄影中的常规体位是

A.正位及侧位

B.正位及斜位

C.正位及轴位

D.侧位及轴位

E.斜位及侧位

更多题库