某同学上网“百度”“盐水浓度与凝固点的关系”(见表)
盐水浓度(%)小于0.1 2.9 4.3 11 15 23 23.8 25 26 36.3
凝固点(℃)0 ﹣1.8 ﹣2.6 ﹣7.5 ﹣11 ﹣21 ﹣17 ﹣9.4 ﹣1.8 0
分析数据得出简要结论:
电影《泰坦尼克号》较真实的还原了该邮轮在大海上撞到冰山后沉没的场景,该海域的海水可以看成4.3%的盐水,难怪许多落水者无法忍受寒冷,因为那里的海水温度约为
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2