Which of the following statements is NOT considered a characteristic of farming in the late 18th and early 19th centuries?（）
第1题：
Which of the following statements is NOT mentioned in the passage?
A. Malaria is under attack in a number of countries.
B. Some types of mosquitoes have become resistant to the current sprays.
C. New poisons have been put into wide use with the new science.
D. One of human's challenges is to win the campaigns against mosquitoes.
第2题：
A.UDT
B.Trigger
C.Package
D.Access plan
第3题：
Which of the following is indicative of negative float?
A.The late start date is earlier than the early start date.
B.The critical path supports the imposed end date.
C.The early finish date is equal to the late finish date.
D.When leads are employed in the schedule.
E.The project is sinking.
第4题：
Which of the following statements is NOT considered a characteristic of farming in the late 18th and early 19th centuries?（）
AUse of artificial fertilizer.
BIntroduction of new agricultural machinery.
CThe'Open-field'system.
DA system of crop rotation.
第5题：
Which of the following statements is NOT true?（）
AThe open field system provided a good opportunity to experiment.
BThe open field system wasted land.
CThe open field system was wasteful of labor and time.
DThe open field system made livestock farming difficult.
第6题：
which of the following is not considered a characteristic of london?
A. The culturaI centre.
B. The sports centre.
C. The financial centre.
D. The business centre.
第7题：
第8题：
● Which of the following is indicative of negative float?
A The late start date is earlier than the early start date.
B The critical path supports the imposed end date.
C The early finish date is equal to the late finish date.
D When leads are employed in the schedule.
E The project is sinking.
第9题：
（）was an important immigration spot in late 19th century and early 20th century.
AEllis Island
BSan Francisco
CHawaii
DMiami
第10题：
Which of the following objects contains control structures that are considered the bound form of SQL statements?（）