按病原体划分，由寄生虫传播的传染病是（）
A.肺结核
B.麻疹
C.阿米巴痢疾
D.斑疹伤寒
E.霍乱
参考答案：C
矿井开采设计工作的原则是什么？
In the flat triangular surface depicted above, if feet, what is the area of the surface in square feet ？（） (Figure not necessarily drawn to scale.)
A.A
B.B
C.C
D.D
E.E
feet, what is the area of the surface in square feet ？（） (Figure not necessarily drawn to scale.)
