题目:
农业生态系统是一种人工驯化生态系统。
答案:
参考答案:对
农业生态系统是一种人工驯化生态系统。
参考答案:对
完形填空。 | ||||
In reallife, robots are mainly used in factories. They do many different jobs. Usually these jobs are too 1 , difficult or boring for humans. Robots also help disabled people and people who cannot look after 2 . For example, scientists are making a robot to help 3 people. Now many of them have a dog to help them. The dog is called a guide dog. In the future, guide dogs might be robot dogs. One robot dog is called Meldog. It has wheels. It usually "walks" 4 its owner. It is very clever. It knows the speed of its owner's walk. Meldog talks to its owner by 5 . The owner wears a special belt. This belt 6 instructions to the owner from Meldog such as "Stop here","Turn left" and"Turn right". In the United States, another 7 of robot helps disabled workers. This robot, called Kilroy, helps disabled computer operators. The robot 8 the sound of its owner's voice. It follows instructions such as "Turn the page" and"Make a cup of coffee". Robots are also used in American 9 . They can do simple jobs. For example, they shave (刮脸) patients and brush their teeth and take meals from the kitchen to patients' rooms. It never gets lost 10 this robot has a map of the hospital in its computer memory. | ||||
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从某一高度相隔1 s先后释放两个相同的小球甲和乙,不计空气阻力,则它们下落的过程中下列说法正确的是( )
A.两球距离保持不变
B.两球的距离越来越大
C.两球的速度差保持不变
D.乙球相对甲球做匀加速运动
ABC会计师事务所负责审计甲公司2011年度财务报表,在制定采购与付款循环的审计计划时,注册会计师遇到下列事项,请代为做出正确的专业判断。
A注册会计师应当确认甲公司的下列控制活动中对防范重复开具支票或电子货币转账支付风险无效的是( )。
A.计算机对付款金额和应付账款余额进行比对
B.就支付金额超过应付金额的情况生成例外报告,并调查原因
C.计算机自动将付款计入相应的应付账款明细账
D.已付款的支持性凭据注明“已付讫”标记
我国A公司与国外B公司签订一份CIF出口合同,以信用证方式支付,国外银行开来的信用证中规定”最晚装运期为5月31日,信用证有效期为6月2日”。A公司备货出运,于5月25日取得正本已装船清洁提单,A公司应不迟于()向银行提交相关单据。
A.5月25日
B.5月31日
C.6月1日
D.6月2日
为什么采取货币贬值往往要配合以紧缩的宏观经济政策?