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设命题p：实数x满足x 2 -4ax+3a 2 ＜0，其中a＞0，命题q：实数x满足 x 2 -x-6≤0 x 2 +2x-8＞0 ．若￢p是￢q的充分不必要条件，求实数a的取值范围．
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【判断题】The four main types of roles featuring Beijing opera are Sheng, Dan, Jing and Chou.
A.
正确
B.
错误
【简答题】Beijing Opera is also called Peking Opera.. It came into being after 1790 when the famous four Anhui opera troupe(戏班) came to Beijing. Its music and singing(唱腔) came from Xipi and Er-huang in Anhui a...
【简答题】根据句意，用括号内所给单词的适当形式填空。 1. There are four main ______ (role) in Beijing Opera. 2. My mother tells me not to speak to the ______ (strange). 3. I want to live as ______ (happy) as you do. 4. In order to m...
【单选题】As we know, there are four main roles in Chinese Beijing Opera. They are “生”, “旦”, “净” , “丑”. Which sentence is wrong among the four explanations？
A.
Sheng refers to main male roles such as Loasheng, Xiaosheng, Wusheng and Hongsheng.
B.
Dan refers to painted-face male known as Hualian.
C.
Jing refers to beautiful females such as Loadan, Wudan, Daomadan, Qingyi and Huadan .
D.
Chou refers to a male or female ugly person.
【简答题】Four main unit operations involved in the treatment of suce water are , , , .
【简答题】Beijing Opera is also called Peking Opera. It came into being after 1790 when the famous four Anhui opera troupes(戏班) came to Beijing. Its music and singing(唱腔) come from Xipi and Erhuang in Anhui and...
【单选题】Peking Opera features four main types of performers. They are __________.
A.
Wusheng, Huadan, Hualian and Clown.
B.
Xiaosheng, Daomadan, Hualian and Clown.
C.
Sheng, Dan, Jing and Chou.
D.
Sheng, Dan, Lao and Chou.
相关题目：
【判断题】The four main types of roles featuring Beijing opera are Sheng, Dan, Jing and Chou.
A.
正确
B.
错误
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