更多"If r and s are integers and rs+r is"的相关试题:
[单项选择]The sum of four consecutive odd positive integers is always ？（）
A. an odd number
B. divisible by 4
C. a prime number
D. a multiple of 3
E. greater than 24
[填空题]If r and s are positive integers,each greater than 1,and if 11(s-1)=13(r-1),what is the least possible value of r+s ？（）
[单项选择]How many integers n are there such that r＜n＜s ？（）
(1)s-r=5
(2)r and s are not 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.
[单项选择]
76． (1) is a channel’s capacity
which directly reflects the data transfer rate of the channe1.
(2) functions in a NetWare network which is used to
define addressing schemes.
(3) is a network
layer device that supports multiple LAN interfaces and segments LANs into
smaller collision and broadcast domains.
(4)
is the popular LAN developed under the direction of the
IEEE802.3.
(5) is a device which enables
digital microcomputers to communicate across analog telephone
lines. |
(1)
A. The volume
B. The bandwidth
C. The noise
D. The delay
[简答题]Which is the odd one out
organ, glean, elate, horse, eager, groan, angle, shore, owned, agree, endow
[单项选择]Which is the odd one out Circle the letter and mark it on the answer sheet with a single line through the centre（ ）.
[填空题]Which of the numbers in the square is the odd one out
| 42 | 15 | 63 | 6 |
| 9 | 81 | 33 | 21 |
| 96 | 16 | 12 | 48 |
| 18 | 60 | 3 | 90 |
[单项选择]If S is the sum of the first n positive integers, what is the value of n ？（）
(1)S＜20
(2)S2＞220
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.
[单项选择]Which pie char is correct
(S．R．=scientific research & sewices；I．S．=industrial sewices：R．F．=construction of research facilities．)
[*]
[单项选择]If X and Y are sets of integers, X△Y denotes the set of integers that belong to set X or set Y, but not both. If X consists of 10 integers, Y consists of 18 integers，and 6 of the integers are in both X and Y, then X△Y consists of how many integers ？（）
A. 6
B. 16
C. 22
D. 30
E. 174
[填空题]Which book’s preface is this
[单项选择]With the breakneck speed at which today’s businesses move, there’s one mantra we’d all do well to remember: Change is constant. Even so, few businesses equip their employees with strategies for dealing with change. It’s often up to savvy employees to negotiate changes on their own.
Few companies can guarantee they won’t need to redeploy workers or have them work a different shift. In fact, a quick search of the jobs on Yahoo! HotJobs found that 977 contained the words "subject to change. "
When approached with changing roles and responsibilities, resist the urge to protest by pointing to your original job description. Employers expect their employees—unless they are under an employment contract—to be flexible, tackling whatever task they’re given with zeal.
It’s OK to be concerned that you may lack some of the key skills and experiences required for the new position. If so, consider asking for additional training at a local college or other professional development organ
A. The customers.
B. The company.
C. The employees.
D. The boss of the company.
