[[QOrDeR]]你好
A.hello | B.I | C.good |
A.afternoon | B.morning | C.evening |
A.morning | B.afternoon | C.goodbye |
A.what | B.how | C.when |
A.your | B.my | C.name |
A.afternoon | B.morning | C.evening |
A.dog | B.hen | C.duck |
A.bye | B.hi | C.thank you |
A.help | B.hi | C.thank you |
A.dog | B.duck | C.cat |
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