若复数z=i1-i,则|z|=( ) A.2 B.1 C.12 D.22

题型:选择题

问题:

若复数z=
i
1-i
,则|z|=(  )
A.
2
B.1C.
1
2
D.
2
2
考点:复数的四则运算
题型:选择题

如图是世界上最长的跨海大桥--我国杭州湾跨海大桥的一部分.2008年5月1日大桥正式通车,该桥全长36km某车刚行驶到桥面时,车内显示速度的表盘示数如图,那么该车此时的运动速度为______km/h=______m/s,车辆匀速通过整个大桥需______h.

题型:选择题

正常状态下,单位重量耗氧量最多的器官是()

A.肾

B.肝

C.脑

D.心

E.肺

题型:选择题

新青年

题型:选择题

The "standard of living" of any country means the average person’s share of the goods and services which the country produces. A country’s standard of living, (1) , depends first and (2) on its capacity to produce wealth." Wealth" in this sense is not money, for we do not live on money (3) on things that money can buy. "Goods" such as food and clothing, and "services" such as transport and " (4) ". A country’s capacity to produce wealth depends upon many factors, most of (5) have an effect on one another. Wealth depends (6) a great extent upon a country’s natural resources. Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a (7) climate; other regions possess none of them.

Next to natural resources (8) the ability to turn them to use. China is perhaps as well (9) as the USA in natural resources, but suffered for many years from civil and (10) wars, and (11) this and other reasons was (12) to develop her resources. (13) and stable political conditions, and (14) from foreign invasion, enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country equally well (15) by nature but less well ordered.

A country’s standard of living does not only depend upon the wealth that is produced and consumed (16) its own borders, but also upon what is indirectly produced through international trade. (17) , Britain’s wealth in foodstuffs and other agricultural products would be much less if she had to depend only on (18) grown at home. Trade makes it possible for her surplus manufactured goods to be traded abroad for the agricultural products that would (19) be lacking. A country’s wealth is, therefore, much influenced by its manufacturing capacity, (20) that other countries can be found ready to accept its manufactures.

16()

A.with

B.within

C.near

D.around

题型:选择题

痉证的病理变化在于()

A.肝郁气滞

B.阴虚血少

C.筋脉失养

D.瘀血阻络

E.痰浊内停

更多题库