已选分类
管理学工商管理
单选题Inacertainflowershop,whichstocksfourtypesofflowerthereareasmanyvioletsascarnation，andasmanytulipsasviolets．Ifthereareequalnumbersofrosesandtulips，whatpercentoftheflowersintheshoparecarnations?(A)10%(B)33%(C)40%(D)50%(E)60%
单选题Company R's annual profit has increased by a constant amount each calendar year since 1985. What was Company R's annual profit in 1991? (1)In 1985 Company R's annual profit was $212.000; in 1989 Company R's annual profit was $242,000. (2)Company R's annual profit has increased by $7,500 each year since 1985. (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
单选题If x and y are positive integers and x is a multiple of y，is y=2?
(1)y≠1
(2)x+2 is a multiple of y.
单选题划分连续变量的组限时，相邻组的组限必须( )。 A．重叠 B．相近 C．不等 D．间断
单选题
股份有限公司的设立，可以采取发起设立和（ ）的方式。
A、认购设立 B、授权设立 C、募集设立 D、登记设立
单选题At 9 a.m, a hiker was due south of point P. What direction was point P from her position at noon? (1)From 9 a.m until 11 a.m she walked due east at 2 miles per hour, and from 11 a. m until noon, she walked due north at 3 miles per hour. (2)At noon, she is exactly 4.5 miles from point P. (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
单选题What is the greatest commom divisor of positive integers m and n? (1)m is a prime number. (2)m and n are consecutive integers. (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
单选题Foranyintegerngreaterthan1,denotestheproductofalltheintegersfrom1ton,inclusive.Howmanyprimenunbersaretherebetweenand,inclusive?
单选题如果数据分布很不均匀，则应编制( )。 A．开口组 B．闭口组 C．等距数列 D．不等距数列
单选题Thehexagonalfaceoftheblockshowninthefigureabovehassidesofequallengthandanglesofequalmeasure.Ifeachlateralfaceisrectangular,whatisthearea,insquareinches,ofonelateralface?
单选题A certain company has records stored with a record-storage firm in 15-inch by 12-inch by 10-inch boxes. The boxes occupy 1.08 million cubic inches of space. If the company pays $0.25 per box per month for record storage, what is the total amount that the company pays each month for record storage?
单选题If 77,777=70, 707+(7.07×n), then n
单选题Government bans on the dumping of sludge anywhere in the ocean are based on the belief that the spread of sludge by ocean currents poses a danger to people. Since it is not clear that sludge dumped on the ocean bottom, far from coasts, would endanger people, the bans should be revised to apply only to coastal waters.
Each of the following, if true, supports the conclusion that the bans on ocean dumping should be revised EXCEPT:
单选题当所有观测值都落在回归直线yc=a+bx上，则x与y之间的相关系数( )。 A．r=0 B．r=1 C．r=-1 D．|r|=1
单选题Board member: As a longtime member of the college"s board of trustees, I believe that the board has functioned well in the past because each of its members has had a broad range of experience and interests. Thus, if in the future any members are elected primarily to press for a particular policy, such as reducing tuition, the board will function leas well.
In drawing the conclusion above, the board member must have been making which of the following assumptions?
单选题How many minutes long is time period X? (1)Time period X is 3 hours-long. (2)Time period X starts at 11 p.m. and ends at 2 a.m. (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．
单选题符号检验与威尔科克森带符号的等级检验相比，( )。 A．方法简单，且更为有效 B．方法简单，但有效性较差 C．方法复杂，且有效性较差 D．方法复杂，但更为有效
单选题What is the volume of a certain rectangular solid?
(1)Two adjacent faces of the solid have areas 15 and 24, respectively.
(2)Each of two opposite faces of the solid has area 40.
单选题In△PQRabove,isPQ＞PR?(1)x=y(2)y=z
单选题过点A(2，0)向圆x2+y2＝1作两条切线AM和AN(见右图)，则两切线和弧MN所围成的面积(图中阴影部分)为()。