When was Ralph Waldo Emerson born? A: January 4, 1801 B: May 25, 1803 C: August 30, 1806 D: December 31, 1800

9、已知c′d′∥X,cd∥X,则CD直线为:

《孙子兵法》一共是()篇 A: 3 B: 13 C: 9 D: 31

【单选题】在建立学生表时,如果要将"出生年月"限制在1980年9月1日至1990年8月31日,在"出生年月"的有效性规则中应写为 A. between 9/1/ 1980  and 8/31/1990 B. between # 1980/9/1 # and # 1990/8/31 # C. between 1980/9/1 and 1990/8/31 D. between #1980/9/1 and 1990/8/31 #

用边界值分析法，假定10 A: X=11，X=29 B: X=9，X=10，X=30，X=31 C: X=10，X=30 D: X=9，X=31

根据课程3 6中所讲的井字棋估值方法 以下局面估值为 31 png

In 1803 the United States purchased Louisiana from _____.

51单片机的复位引脚号（ ） A: 40 B: 9 C: 20 D: 31

The estimated interval [img=47x29]1803a31cd5741d9.png[/img] is formed by a pair of interval estimators [img=15x27]1803a31cde55410.png[/img] and [img=15x27]1803a31ce748559.png[/img] so that [img=189x39]1803a31cf05b641.png[/img]. Whether the statement is correct or not that the probability of the changed parameter falling within the interval [img=47x29]1803a31cd5741d9.png[/img] is [img=43x20]1803a31d099e3ee.png[/img].

贝多芬一生共创作了（ ）部小提琴奏鸣曲。 A: 9 B: 31 C: 10 D: 16