更多"Let A and B be two mutually exclusi"的相关试题:
[单项选择]If two events are mutually exclusive, the probability that they both will occur at the same time is :（）
A. 0.50.
B. 1.00.
C. 0.00.
[单项选择]Two events have highlighted the tensions in recent years.
A. extended
B. emphasized
C. distorted
D. illustrated
[单项选择]If two events are independent, the probability that they both will occur is:（）
A. 0.00.
B. 0.50.
C. Cannot be determined from the information given.
[单项选择]If two events can not both occur in a single trial, they are ______ .
A. false events
B. mutually exclusive
C. statistically independent
D. just in time
[单项选择]Two events have {{U}}highlighted{{/U}} the tensions in recent years.
A. extended
B. emphasized
C. distorted
D. illustrated
[多项选择]Which two B-RAS service offerings maintain the analog dial-up model with centralized user authentication，authorization，andaccounting？（）
A. Routed1483
B. Bridged1483
C. PPPoverATM
D. PPPoverEthernet
[单项选择]We have waited for him for two hours. Let's wait ______ minutes.
[单项选择]Management let the employees ______at two o'clock.
A. (A) leave
B. (B) left
C. (C) was leaving
D. (D) was left
[单项选择]We have studied for two hours. Let's stop ______.
[单项选择]—We've worked for two hours.—Yes. Let's _______.
[多项选择]What are two characteristics of the relationship between the Cisco PIN architecture and Cisco Validated Designs? （）(Choose two.)
A. Cisco is focusing on Cisco Validated Designs as a means to driving integrated networks.
B. Cisco is focusing on the PIN architecture as a means to driving integrated networks.
C. The Cisco PIN architecture is a critical mechanism for supporting integrated markets because it can be implemented quickly.
D. The Cisco Validated Designs program provides critical mechanisms for supporting integrated markets because the mechanisms can be implemented quickly.
E. Cisco Validated Designs can be implemented quickly without customer input.
[单项选择]If the distance between two objects is shortened by half, their gravitational attraction will______.
A. double
B. become four times stronger
C. be the same
D. get four times weaker
[单项选择] Given the following two tables: TAB1 R1 A A A B B C C D E TAB2 R2 A A B B C C D Which of the following queries returns the following result set? RETVAL E（）
A. SELECT r1 AS retval FROM tab1 INTERSECT SELECT r2 AS retval FROM tab2
B. SELECT r1 AS retval FROM tab1 EXCEPT SELECT r2 AS retval FROM tab2
C. SELECT DISTINCT r1 AS retval FROM tab1, tab2 WHERE r1 <> r2
D. SELECT r1 AS retval FROM tab1 UNION SELECT r2 AS retval FROM tab2
