关于状态检测技术，说法错误的是()。
A. 跟踪流经防火墙的所有通信
B. 采用“状态监视”模块，执行网络安全策略
C. 对通信连接的状态进行跟踪分析
D. 状态检测防火墙工作在协议的最底层，所以不能有效的监测应用层的数据
Psychological research indicates that college hockey and football players are more quickly
A. The football and hockey players became more hostile and aggressive during the season and remained so during the off-season, whereas there was no increase in aggressiveness among the swimmers.
B. The football and hockey players, but not the swimmers were aware at the start of the experiment that they were being tested for aggressiveness.
C. The same psychological research indicated that the football and hockey players had a great respect for cooperation and team play, whereas the swimmers were most concerned with excelling as individual competitors.
D. The research studies were designed to include no college athletes who participated in both contact and noncontact sports.
E. Throughout the United States, more incidents of fan violence occur at baseball games than occur at hockey or football games.
Marine archaeologists recently discovered underwater in an ancient Mediterranean harbor several hundred ceramic objects, dating back approximately 4,000 years. Although any remnants of a ships wooden frame. would have long ago decayed, the quantity and variety of the ceramics discovered in the initial investigation led the archaeologists to hypothesize that they had discovered an approximately 4, 000-year-old shipwreck. Which of the following, if true, gives the strongest support to the archaeologists hypothesis？
A. Marine archaeologists have discovered a 3, 000-year-old shipwreck in another ancient Mediterranean harbor.
B. The rate at which wood decays when submerged in water varies greatly with the type of wood involved.
C. Two confirmed shipwrecks, approximately 3,500 and 3,000 years old, respectively, have been discovered in the same harbor in which the ceramic objects were discovered.
D. The ceramics discovered in the harbor are similar to ceramics found in several other ancient Mediterranean harbors.
E. Bronze ship"s fittings, approximately 4,000 years old, were discovered on the seabed among the ceramic objects.
Within the last fifty years, the majority of the United States work force has moved from the manufacturing to the service sector of the economy. This shift has occurred, not because of a decline in the production of goods, but because, with applications of new technology, more production of goods can now be achieved with relatively fewer people, and more people are therefore available to satisfy the increased demand for services. Which of the following, if true, provides evidence to support the claim made above that more production of goods can now be achieved with relatively fewer people？
A. Many manufacturing industries in the United States have lost a significant share of their domestic and foreign markets to foreign producers.
B. Services accounted for half of all jobs in the late 1940"s but today account for seventy percent of all jobs.
C. Manufacturing output was one-third higher in 1980 than in 1970, while manufacturing employment grew only five percent during that period.
D. Manufacturing industries, on average, pay a higher per-hour wage and use fewer part-time employees than do service industries.
E. Living standards in states that have shifted to manufacturing economies within the last fifty years are closer to the national average now than in 1940.
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