甘肃省普通高校专升本（土建类）工程制图模拟冲刺卷（六）

（A）p₁ = q₁ = r₁ = 0.82

（B）p₁ = q₁ = r₁ = 1

（C）p₁ = q₁ = 1.22, r₁ = 1

（D）p₁ = 1, r₁ = 0.5