People use money to buy food, books,
bicycles and hundreds of other things they need. When they work, they usually
get paid in money. Most of the money used today is made of metal or paper. But in ancient times people used to use all kinds of things as money. One of the first kinds of money was shells. In China, cloth and knives were used as money. Elephant tusks, monkey tails and salt were used in some parts of Africa. Rice was also a kind of money used by the ancient people in some islands. Cows and other animals were used as money, too. The first copper coins were made in China. They were round and had a square hole in the centre. Different counties had used different metals for their money. Later some countries began to make Coins of gold and silver. But gold and silver were heavy to carry when people need a lot of A. India B. America C. France D. China [判断题]总线由数据总线、地址总线和控制总线组成。( ) 222010105
A.正确 B.错误 [单项选择]测定含有()的样品,应使用不透明材料或有色玻璃构成的容器。
A. 光敏物质 B. 碱性物质 C. 酸性物质 D. 毒性物质 [单选题]发现接触网断线及其部件损坏或在其上挂有线头、绳索等物时,应距断线接地处( )以外设置防护,严禁人员接近。
A.0.7M B.2M C.2.5M D.10M [单选题]安全生产监督管理部门应当为进入冶金企业特定作业场所进行监督检查的人员,配备必需的( )。
A.个体防护用品和监测检查仪器 B.劳保用品和检查仪器 C.个体防护用品和监测仪器 D.劳保用品和监测检查仪器 [多选题]分光光度计大的比色皿使用时要注意( )。
A.不能拿比色皿的毛玻璃面 B.比色皿中试样装入量一般应为2/3-3/4之间 C.比色皿一定要洁净 D.一定要使用成套玻璃比色皿 [单项选择]I apologize ______ being late but I missed the bus.
A. to B. by C. for D. of [名词解释]疾病状态
[判断题]各分支机构若收到鉴定单位鉴定假币通知,应自收到通知之日起2个工作日内,将待鉴定货币送达鉴定单位。
A.正确 B.错误 [多选题]值班护士下列哪项正确( )
A.认真执行查对制度 B.夜班患者诉睡不着,护士马上予以安定口服 C.密切观察、记录危重病人病情变化 D.做好抢救准各和抢救配合 E.如实记录抢救过程 [多选题]党的三大作风是:
A.艰苦朴素的作风 B.理论和实践相结合的作风 C.和人民群众紧密的联系在一起的作风 D.批评和自我批评的作风 [判断题]需由国家烟草专卖局有关业务主管部门调剂的烟草专卖品,应当由国家烟草专卖局签发烟草专卖品准运证。( )
A.正确 B.错误 [判断题]作业人员应在接地线的保护范围内作业。禁止在无接地线或接地线装设不齐全的情况下进行高压检修作业。
A.正确 B.错误 [单项选择]在第()届亚运会上首次把武术列为正式比赛项目。
A. 十一 B. 十二 C. 十三 D. 十四 [单项选择]GC所用极性固定液
A. ODS B. 氧化铝 C. 琼脂糖 D. SE-52(含苯基5%,300℃) E. 水 我来回答: 提交
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