有甲,乙两个寿命期不同的互斥方案，两个方案的建设期均为1年，基准收益率为8%，两方案的净现金流量如表4-19所示：已知(P／A,8%,5)＝3.993，(P／A,8%,6)＝4.623，(P／A,8%,7)＝5.206,(P／A，8%，8)＝5.747，下列关于甲,乙两方案优劣的表述中，全部正确的是( )。

A:采用研究期法：NPV＝276.48万元，NPV＝202.21万元，甲方案优于乙方案 B:采用净现值率法：NPVR＝55.3%，NPVR＝28.9%，甲方案优于乙方案 C:采用净现值法：NPV＝276.48万元，NPV＝460.54万元，乙方案优于甲方案 D:采用年值法：NAV＝59.81万元，NAV＝80.14万元，乙方案优于甲方案

血浆因子亚基抗原测定是（）

A:血浆因子亚基抗原测定 B:凝块稳定性试验 C:定性试验 D:定量试验 E:确证试验

下颌位于正中关系时的接触称为（）

A:正中关系 B:正中关系 C:正中 D:正中位 E:下颌息止位

某理想气体分别进行如图2所示的两个卡诺循环：Ⅰ（abcda）和Ⅱ（a'b'c'd'a'），且两条循环曲线所包围的面积相等。设循环Ⅰ的效率为η，每次循环在高温热源处吸收热量Q，循环Ⅱ的效率为η'，每次循环在高温热源吸收的热量为Q'，则（）。

A:η＜η'，Q＜Q' B:η＜η'，Q＞Q' C:η＞η'，Q＜Q' D:η＞η'，Q＞Q'

—Aren't you Mary's sister
—（　）. I'm her aunt.

A:Yes I am B:No I'm not C:Yes I'm not D:No I am

A
Music
Opera at Music Hall: 1243 Elm Street. The season runs June through August, with additional performances in March and September. The Opera honors Enjoy the Arts membership discounts. Phone: 241-2742. http://www.cityopera.com.
Chamber Orchestra: The Orchestra plays at Memorial Hall at 1406 Elm Street, which offers several concerts from March through June. Call 723-1182 for more information. http: //www.chamberorch.com.
Symphony Orchestra: At Music Hall and Riverbend. For ticket sales, call 381-3300. Regular season runs September through May at Music Hall in summer at Riverbend. http://www.symphony.org/home.asp.
College Conservatory of Music (CCM): Performances are on the main campus(校园) of the university, usually at Patricia Cobbett Theater. CCM organizes a variety of events, including performances by the well-known LaSalle Quartet, CCM’s Philharmonic Orchestra, and various groups of musicians presenting Baroque through modern music. Students with I.D. cards can attend the events for free. A free schedule of events for each term is available by calling the box office at 556-4183. http://www.ccm.uc.edu/events/calendar.
Riverbend Music Theater: 6295 Kellogg Ave. Large outdoor theater with the closest seats under cover (price difference).Big name shows all summer long! Phone:232-6220. http://www.riverbendmusic.com.

A:241-2742. B:723-1182. C:381-3300. D:232-6220.

有以下程序
　　main(　)
　　{　char a,b,c,*d;
　　　a='/';　　　　　b='/xbc';
　　　c='/0xab';　　　　　d="/0127";
　　　printf("%c%c%c%c/n",a,b,c,*d);
　　}
　　编译时出现错误，以下叙述中正确的是 （）

A:程序中只有a=''/'';语句不正确 B:b=''/xbc'';语句不正确 C:d="/0127";语句不正确 D:a=''/'';和 c=''/0xab'';语句都不正确

有以下程序
main（　）{
char a,b,c,*d;
a='/';
b='/xbc';
c='/0xab';
d="/0127";
printf("%c%c%c%c/n",a,b,c,*d);
}
编译时出现错误，以下叙述中正确的是（）

A:程序中只有a='/';语句不正确 B:b='/xbc';语句不正确 C:d="/0127";语句不正确 D:a='/';和 c='/0xab';语句都不正确