在从原点出发的射线与STC曲线相切的产量上，必有（ ）。 A: SAVC值最小 且SAVC=SMC B: SAC最小 且SAC=SMC C: MC曲线处于下降阶段 D: AVC=SMC
在从原点出发的射线与STC曲线相切的产量上，必有（ ）。 A: SAVC值最小 且SAVC=SMC B: SAC最小 且SAC=SMC C: MC曲线处于下降阶段 D: AVC=SMC
已知某企业短期总成本函数为STC=Q3-10Q2+17Q+66，试求 （1）当Q=2时，STC=（ ） （2）当Q=2时，SAC=（ ） （3）SAVC达到最小值时，Q=（ ）
已知某企业短期总成本函数为STC=Q3-10Q2+17Q+66，试求 （1）当Q=2时，STC=（ ） （2）当Q=2时，SAC=（ ） （3）SAVC达到最小值时，Q=（ ）
在短期内,随着产量的增加,SAFC会越来越小,于是SAC曲线和SAVC曲线之间的垂直距离会越来越小,( ) A: 直至两曲线相交 B: 但决不会相交 C: 会越来越大 D: 不确定
在短期内,随着产量的增加,SAFC会越来越小,于是SAC曲线和SAVC曲线之间的垂直距离会越来越小,( ) A: 直至两曲线相交 B: 但决不会相交 C: 会越来越大 D: 不确定
完全竞争厂商的短期供给曲线应该是( ) 。 A: 短期平均成本（SAC）曲线上收支相抵点及其以上的部分 B: 短期平均可变成本（SAVC）曲线上停止生产点及其以上的部分 C: 短期边际成本（SMC）曲线上停止生产点及其以上的部分 D: 短期边际成本（SMC）曲线上收支相抵点及其以上的部分
完全竞争厂商的短期供给曲线应该是( ) 。 A: 短期平均成本（SAC）曲线上收支相抵点及其以上的部分 B: 短期平均可变成本（SAVC）曲线上停止生产点及其以上的部分 C: 短期边际成本（SMC）曲线上停止生产点及其以上的部分 D: 短期边际成本（SMC）曲线上收支相抵点及其以上的部分
Reading Comprehension (2 points each;5O points in all)Section ADirecions: There arr four passages in this section. Each passage is followed by five questions or unfinished sratcments. For each of them there are four choices marked A.B.C and D. You should decide on the best choice. Passage ISubways arc underground trains. which usually operate 24 hours a day. They are found inlarger cities and usually run between the suburbs and uhe downtown areas. Maps and schedulcs arcavailable from the tickct otice. If you take uhe subway ofcn, you can savc moncy by purchasingamonthly pass(月票).City-operated buses nun on various routcs (线路)and are dcsigncd to be a cerain places atcertain time. Maps and schedules may be posted at cerain stops. or they may be available a localbanks. libraries. the student union. or from the bus drivers. Buses run mainly during the day.Fareispaid by exact change in coins. or by monthly passes.Taxis are generally morc cxpensive in the United States than in other countries. If youusc ataxi, bc sure you ask the amount of the fare before you ugrcc toride.The diver usually cxpectsatip(小费)of 1S pcrcent of the fare.D46.Accordingth passage.subways at undergrouod trains. which usually runYou<br/>can cet the maps and schcdulcs of the subway A: at bus station B: at<br/>local banks C: in any bookstores D: from<br/>the ticket omces
Reading Comprehension (2 points each;5O points in all)Section ADirecions: There arr four passages in this section. Each passage is followed by five questions or unfinished sratcments. For each of them there are four choices marked A.B.C and D. You should decide on the best choice. Passage ISubways arc underground trains. which usually operate 24 hours a day. They are found inlarger cities and usually run between the suburbs and uhe downtown areas. Maps and schedulcs arcavailable from the tickct otice. If you take uhe subway ofcn, you can savc moncy by purchasingamonthly pass(月票).City-operated buses nun on various routcs (线路)and are dcsigncd to be a cerain places atcertain time. Maps and schedules may be posted at cerain stops. or they may be available a localbanks. libraries. the student union. or from the bus drivers. Buses run mainly during the day.Fareispaid by exact change in coins. or by monthly passes.Taxis are generally morc cxpensive in the United States than in other countries. If youusc ataxi, bc sure you ask the amount of the fare before you ugrcc toride.The diver usually cxpectsatip(小费)of 1S pcrcent of the fare.D46.Accordingth passage.subways at undergrouod trains. which usually runYou<br/>can cet the maps and schcdulcs of the subway A: at bus station B: at<br/>local banks C: in any bookstores D: from<br/>the ticket omces