流行性出血热的传播途径为:()
A.虫媒传播
B.消化道传播
C.母婴传播
D.接触传播
E.呼吸道传播
参考答案:A, B, C, D, E
Consumption of the total life-cycle effort in software maintenance is()that in software development.
A.less than
B.larger than
C.equal or less than
D.equal or larger than
腹部标志中耻骨联合上缘左右旁开约6cm对应()
A.卵巢
B.前列腺
C.子宫
D.直肠
E.膀胱