A:2L氟化氢气体分解成1L的氢气和1L的氟气吸收270kJ热量
B:1mol氢气与1mol氟气反应生成2mol液态氟化氢放出的热量小于270kJ
C:在相同条件下,1mol氢气与1mol氟气的能量总和大于2mol氟化氢气体的能量
D:1个氢气分子与1个氟气分子反应生成2个氟化氢分子放出270kJ
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Hello, I am John. Look, this is a picture 1 my room. I have a nice bed in the middle of my room. There is a big table 2 the closet and the bed. Many clothes are3 the closet. A white air-conditioner is 4 the wall beside the window. There is a computer on the table. I often write e-mails with it.
Do you like my room? What's your room 5? Can you tell me, please?
若|1﹣x|=1+|x|,则x-12等于( )
某学生的论文把英国“光荣革命”、美国l787年宪法、法国1875年“一票共和”、设计德国政治管理模式的俾斯麦等作为重要证据。该论文的主题最有可能是( )