国旗、国徽、国歌和首都规定在我国现行宪法的附则中。 ()
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What is mentioned about JNC Film Studio？
A. It will focus exclusively on animation movies.
B. Many business owners will invest in the movie.
C. Its relocation will promote travel to Huntsville City.
D. Martin Cooper will give a presentation on June 15.
一封闭水箱内自由表面的绝对压强P0= 12.5×104 Pa，水的深度为300cm，则水箱底的绝对压强为
A. 12.5×104Pa
B. 1.54×105Pa
C. 41.9×104Pa
D. 306.5×104Pa
火灾中造成人员伤亡的主要原因有()
A被烟雾和毒气窒息、逃生行为不当
B发现失火时没有及时报警
C楼内缺少电梯，不能及时逃生
D没有找到水源，救火不及时
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