气体保护是变压器的主要保护,不但能有效地反应变压器内部故障,也可以反应变压器外部故障。
参考答案:错
A newspaper polled 1,000 likely voters about which of the following issues, if any, played an important role in their decision-making process for an upcoming election: education, crime, and/or taxes. Of the voters surveyed, a total of 495 named education, 490 named crime, and 440 named taxes. In the figure above, the overlapping areas between two circles represent the people who named only those two items; the overlapping area between the three circles represents those people who named all three issues.
What percentage of those polled named only education or only crime but no other issue ?()
A. 25.5%
B. 31.5%
C. 39%
D. 55%
E. 98.5%
整个20世纪90年代韩国电影都在世界影坛上大放异彩。