①把3.6×5.78中乘数的小数点都去掉,积会比原来扩大1000倍。②65÷10=6……5,如果被除数和除数都扩大3倍,那么商和余数也扩大3倍。③等边三角形是特殊的等腰三角形。④一个正方形池塘的四周栽满了树,已知四个角上都各栽有1棵,数一数每边都栽了6棵。这个池塘四周一共栽了24棵树。⑤零除以任何数都得零。
A.1个 | B.2个 | C.3个 | D.4个 |
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