The idea of rainmaking is almost as old
as man, but it was not until 1946 that man succeeded in making rain. In ancient
times, rainmakers had claimed a bring rain by many methods: dancing, singing,
killing various kinds of living creatures, and blowing a stream of water into
the air from a kind of pipe. More recently, some rainmakers claimed to make rain by shooting guns, causing explosions, or burning chemicals, the smoke of which was supposed to cause rain to fall. These rainmakers asked for as much as 1,000 dollars to make an inch of rain. One of them was so successful that he was almost hanged. He was believed to have caused a 20-inch rain in southern California that flooded the land, killed several people, and did millions of dollars of damage. Before 1946, rainmakers were either liars or honest people who happened to have good luc A. a liar B. an honest man C. a scientist D. a chemist [单项选择]ADSL技术主要解决的问题是_______。
A. 宽带传输 B. 宽带接入 C. 宽带交换 D. 多媒体综合网络 [单选题]配电线路、设备检修,在显示屏上断路器(开关)或()的操作处应设置“禁止合闸,有人工作!”或“禁止合闸,线路有人工作!”以及“禁止分闸!”标记。
A.接地刀闸 B.母线刀闸 C.隔离开关(刀闸) D.保护压板 [单项选择]下列哪一个号码是中国船队的识别码?()
A. 412119703 B. 004122100 C. 041211111 D. 08530301 [单选题]《铁路线路维修规则》第3.5.9条规定:接头12级防松螺母扭矩标准为( )N·m。
A.400~600 B.500~700 C.600~1000 D.900~1100 [判断题]运行设备电气量保护,由运行维护单位负责,正常情况下保持投入,运行值班员根据现场规程规定自行操作。但运行设备的重瓦斯保护投退,由运行值班员自行操作完成后,再汇报值班调度员。( )
A.正确 B.错误 [判断题]个人单课目训练成绩的评定既有两级制又有四级制。( )
A.正确 B.错误 [单项选择]若某支持虚拟存储的计算机共有32位地址线,页面为4K,则其虚地址空间为()。
A. 2GB B. 4GB C. 128KB D. 16GB [单选题]电力场效应晶体管MOSFET适于在 ( ) 条件下工作。A.直流 B.低频 C.中频 D.高频
A.A B.B C.C D.D [单项选择]根据保险ABC条款中的家庭自用汽车保险损失保险条款被保险车辆的损失应当由第三方负责赔偿的,无法找到第三方时,免陪率为()。
A. 10% B. 20% C. 30% D. 40% [单选题]中华民族的明天,是( )。
A.“雄关漫道真如铁” B.“人间正道是沧桑” C.“长风破浪会有时” D.“直挂云帆济沧海” [单选题]电缆的电容性是电缆线路中的一个重要参数,它决定电缆线路中的()大小。
A.负荷电流 B.电容电流 C.泄露电流 D.允许电流 [单项选择]庶几病者观之,得以印证
A. 庶民百姓 B. 希望 C. 庶事 D. 庶物 E. 近似 [简答题]两个人如何运送伤员?
[填空题] Man cannot continue 【26】 his numbers at the present rate. In the 【27】 thirty years man will face a period of crisis. 【28】 experts believe that there will be a widespread food 【29】 Other experts think this is 【30】 pessimistic, and that man can keep things 【31】 worse than they are now. But 【32】 that two-thirds of the people in the world are undernourished or starving now.
One thing that man can do is to limit 【33】 of babies born. The need 【34】 this is obvious, but it is 【35】 to achieve. People have to 【36】 to limit their families. In the countries of the population 【37】 ,many people like big families. The parents think that this 【38】 a bigger income for the family and ensures there will be someone in the family who will look 【39】 them in old age.
Several governments have 【40】 birth control policies in recent years. 【41】 them are Japan, China, India and Egypt. In some 【42】 the results have not been 【43】 . Japan has been an exception. The Japanese adopted a birth control poli
A. A.need B.want C.absence D.shortage [单选题]以下可用来描述计量资料的离散程度的指标是
A.算术均数 B.几何均数 C.中位数 D.标准差 E.四分位数 [简答题]试述光电效应的机理和特点
[多项选择]以下属于单位存款的有()。
A. 定期存款 B. 活期存款 C. 定活两便存款 D. 协定存款 E. 保证金存款 [多选题](多选题,2分)
根据表现形式不同,课可以分为: A.微视频式 B.微网页式 C.三分式 D.随录式 [多项选择]乳腺癌的视诊表现有()
A. 乳房下垂 B. 乳房皮肤呈"橘皮样"改变 C. 乳房缩小 D. 乳头抬高 E. 乳房局部皮肤凹陷 我来回答: 提交
|