It is often claimed that nuclear energy is something we cannot do without. We live in a consumer society where there is an enormous demand for commercial products of all kinds. Moreover, an increase in industrial production is considered to be one solution to the problem of mass unemployment. Such an increase presumes an abundant and cheap energy supply. Many people believe that nuclear energy provides an inexhaustible and economical source of power and that it is therefore essential for an industrially developing society. There are a number of other advantages in the use of nuclear energy. Firstly, nuclear power, except for accidents, is clean. A further advantage is that a nuclear power station can be run and maintained by relatively few technical and administrative staff. The nuclear reactor represents an enormous step in our scientific evolution and, whatever the anti-nuclear group says, it is wrong to expect a return to more primitive sources of fuel. However, opponents of n
A. advance the final argument
B. reflect the writer’s attitude
C. reverse previously expressed thoughts
D. show the disadvantages of nuclear power
Some people think they have an answer (36) the problem of automobile crowding and pollution in large cities. Their (37) is the bicycle, or bike. In a great (38) cities, hundreds of people ride bicycles to work every day. In New York city, some bike (39) have even formed a group (40) "Bike for a Better City". They claim(声称)that if (41) people rode bicycles to work, there (42) be (43) automobiles in the downtown section of the city and (44) less dirty air from car (45) .
For several years this (46) has been trying to get the city government to (47) bicycle riders. For (48) ,they want the city to paint special lanes(车道)for bicycles only (49) some of the main streets, because when bicycle riders must use the (50) lanes as cars, there may be (51) . "Bike for a Better City" feels that if there were (52) lanes, (53) people would use bi
A. problem
B. answer
C. help
D. purpose
And its management in an Oracle database instance?
The entire PGA is located in the System Global Area (SGA) when using shared
Servers.
PGA_AGGREGATE_LIMIT is a hard limit on the PGA size for any one session.
The private SQL area (UGA) is located in the System Global Area (SGA) when
Using dedicated servers.
The private SQL area (UGA) is located in the System Global Area (SGA) when
Using shared servers.
我来回答: