两小磁针因受某种磁场的作用后相互平行,如图所示.产生这种效果的磁场可能是( )

题型:选择题

问题:

两小磁针因受某种磁场的作用后相互平行,如图所示.产生这种效果的磁场可能是(  )

A.某条通电直导线产生的磁场

B.相距很近的异名磁极之间的磁场

C.相距很近的同名磁极之间的磁场

D.匀强磁场

考点:磁场,地磁场
题型:选择题

What is your favorite color? Do you like yellow, orange, red?   小题1: Do you prefer grey and blue? Then you are probably quiet, shy, and you would rather follow than lead.  You tend to be a pessimist(悲观者).  At least, this is what psychologists(心理学家)tell us, and they should know, because they have been seriously studying the meaning of color preference, as well as the effect that colors have on human beings.   小题2: If you happen to love brown, you did so, as soon as you opened your eyes, or at least as soon as you could see clearly.

 小题3: A yellow room makes most people feel more cheerful and more relaxed than a dark green one; and a red dress brings warmth and cheer to the saddest winter day.

 小题4: A black bridge over the Thames River, near London, used to be the scene of more suicides(自杀者)than any other bridge in the area—until it was repainted green.  The number of suicide attempts immediately fell sharply.  Perhaps it would have fallen even more if the bridge had been done in pink or baby blue.

 小题5: It is an established fact(既成的事实)that factory workers work better, harder, and have fewer accidents when their machines are painted orange rather than black or grey.

A.On the other hand, black is depressing.

B.They tell us, among other facts, that we do not choose our favorite color as we grow up—we are born with our preference.

C.The rooms are painted in different colors as you like.

D.If you do, you must be an optimist, a leader, an active person who enjoys life, people and excitement.E. Light and bright colors make people not only happier but more active.

F. Life is like a picture or a poem, full of different colors.

G. Colors do influence our moods—there is no doubt about it.

题型:选择题

()负责本行政区域内的道路交通安全管理工作。

A.县级以上地方各级人民政府公安机关交通管理部门

B.市级以上地方各级人民政府公安机关交通管理部门

C.省级以上地方各级人民政府公安机关交通管理部门

D.中央人民政府公安机关交通管理部门

题型:选择题

由于精确农业优点多,其发展前景十分广阔,目前已在美国、英国、德国、荷兰、意大利等西方发达国家蓬勃兴起,下图为“精确农业系统工作示意图”。读图完成下列问题。。

小题1:上图主要反映出(    )

A.工业基础对农业生产的影响程度增强

B.土壤肥力对农业生产的影响程度增强

C.市场对农业生产的影响程度增强

D.技术对农业生产的影响程度增强小题2:下列目的,借助精确农业系统不能实现的是(    )

A.合理施肥

B.农产品品质鉴定

C.作物估产

D.土壤状况调查

题型:选择题

J.Martin明确计算机有四种类型环境,能用语言灵活创建逻辑数据文件是属于下列

A.文件

B.应用数据库

C.主题数据库

D.信息检索系统

题型:选择题

应紧急手术的肾损伤是

A.明显血尿
B.严重休克不能纠正
C.尿外渗
D.合并肋骨骨折
E.高热

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