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【判断题】
键控(Key)是两个视频佶号输入源的画面,在切换过程中的一种基木切换方式。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】下列诗句与所描绘的花卉,对应全部正确的项是 1疏影横斜水清浅,暗香浮动月黄昏。 2轻肌弱骨散幽葩,更将金蕊泛流霞。 3知有清芬能解秽,更怜细叶巧凌霜。 4秀樾横塘十里香,水花晚色静年芳。
A.
①荷花 ②菊 花③兰花 ④梅花
B.
①荷花 ②兰花 ③菊花 ④梅花
C.
①梅花 ②菊花 ③兰花 ④荷花
D.
①梅花 ②兰花 ③菊花 ④荷花
【单选题】What is the ' another problem ' mentioned in paragraph 4?
A.
A lot of problems have been caused by information technology.
B.
Modern people are feeling isolated from each other.
C.
Competition is much more severe than ever before.
D.
Modern society hosts all sorts of crimes.
【单选题】What is the root cause of serious social disturbance in less developed countries?
A.
Violent social change.
B.
Military overthrow.
C.
Nationalism.
D.
Fundamentalist religious movements.
【单选题】What is the root causeof desertification？
A.
poor farming
B.
overpopulation
C.
radical climate change
D.
disappearance of rare plant species
【简答题】What were the effects of the decision she made? A) reasons B)results C) causes D)bases
【单选题】What is the STP root guard feature designed to prevent？（）
A.
a root port being transitioned to the blocking state
B.
a port being assigned as a root port
C.
a port being assigned as an alternate port
D.
a root port being transitioned to the forwarding state
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