(1)大漠狂风吹起,飞沙走石遮天蔽日。战士们不顾气候的恶劣,半卷着红旗,向前挺进。
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(2)青海湖连绵不断的大片乌云,使雪山变得昏暗。从这孤零零的小城向西望去,那是玉门关。
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(3)在途中,捷报传来,前锋部队已在夜战中大获全胜,连敌军的首领也被生擒。 __________________________________
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