问题
解答题
22×0.125×(-0.25)×(32)
答案
原式=-22×0.125×0.25×32
=-22×(0.125×8)×(0.25×4)
=-22×1×1
=-22.
22×0.125×(-0.25)×(32)
原式=-22×0.125×0.25×32
=-22×(0.125×8)×(0.25×4)
=-22×1×1
=-22.
将下列常见的传染病及其传播途径搭配起来
A.沙眼 | |
B.肺结核 | (1)呼吸道传染 |
C.细菌性痢疾 | |
D.狂犬病 | (2)血液传染 |
E.甲型肝炎 | |
F.流行性感冒 | (3)消化道传染 |
G.蛔虫病 | |
H.乙型肝炎 | (4)体表传染 |
I.艾滋病 | |
K.血吸虫病 |