1.完成表格。(对的打“√”,错的打“×”,并找出含有相关判断依据的图片)
观点 | 判断正误 | 判断依据(填图片序号) |
儿童要在成年人的监护下乘梯 | ______ | ______ |
在电梯上没必要手握扶手带 | ______ | ______ |
要远梯级边缘 | ______ | ______ |
2.有位妈妈用婴儿车推着孩子乘坐扶梯。小琴看了扶梯安全规范后,可能会提醒这位妈妈:“___________________________”
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