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【多选题】
Which of the following is NOT true about Wilbur Schramm?A.
He is widely credited as the single most important definer of U.S. mass communication studies of his day.
B.
His career had been closely bound up with U.S. intelligence and clandestine psychological operations since at least the late 1930s.
C.
In the 1950s, he became activist supporters of U.S. psychological warfare projects and derived part of their income from participation in such efforts over a period of at least two decades.
D.
His work during the first decade after World War II focused on elaborating Lippmann's concept of the stereotype-the "pictures in our heads".
E.
Shortly after the opening of the Korean War in 1950, he was sent by the U.S. air force to Korea to interview anticommunist refugees and to study U.S. psychological operations.
F.
During the 1950s, his personal income and professional prestige Bibliographic Essay were to a significant degree dependent upon his work for the U.S. Air Force, U.S. Information Agency, Department of Defense, and the CIA sponsored propaganda organization Radio Free Europe.
G.
He is the author of The Process and Effects of Mass Communication, which is widely regarded as a founding text of graduate mass communication studies in the United States.
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【简答题】( )的吸收能引起动物体温的升高。
【单选题】有关引起全球气温升高的人为原因，叙述不正确的是
A.
大量砍伐森林，使植被吸收二氧化的量减少，大气中二氧化碳的量增多
B.
工农业等生产活动消耗大量能源是以矿物能源为主，燃烧后向大气中排放了大量的二氧化碳
C.
生活取暖、餐饮等以及汽车尾气也会排放大量的二氧化碳
D.
火山喷发的气体中也有大量的二氧化碳
【单选题】物体吸收(或放出)热量,微观上只使物体分子的动能增加(或减少),宏观上造成物体的温度升高(或降低),但并没有引起集态变化,这时物体吸收(或放出)的热量(或热能)称为“ ”。物体吸收(或放出)热量,微观上只使物体分子的势能增大(或减小),宏观上物质集态发生了变化,但并没有引起物体的温度变化,这时物体吸收(或放出)的热量(或热能)称为“ ”。
A.
潜热，显热
B.
显热，潜热
C.
显热，显热
D.
潜热，潜热
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