Which type of pesticide does China spend a higher percentage of its total pesticide expenditure on compared to the global market?
a) Herbicides
b) Insecticides
c) Fungicides
d) Other
If China aims to reduce its use of the pesticide category with the highest global market share by 10% in the next report, which category would that be?
a) Herbicides
b) Insecticides
c) Fungicides
d) Other
What is the ratio of China's expenditure on herbicides to its expenditure on fungicides?
a) 3:1
b) 4:1
c) 2:1
d) 1:1
Considering the data, which statement is correct about China's pesticide market?
a) China’s market share for herbicides is equal to that for insecticides.
b) China spends more on fungicides than on other types of pesticides.
c) China's percentage of the global market for 'Other' pesticides is the highest among the categories.
d) Insecticides have the lowest expenditure in both the global and China markets.
答案:
a) 除草剂 - 与全球40%相比,中国在农药支出总额上花费了48%在除草剂上。
a) 除草剂 - 这一类在全球市场上拥有最高的份额,达到40%。
b) 4:1 - 中国在除草剂上的支出为30亿元人民币,而在杀菌剂上的支出为9.38亿元人民币。
c) '其他' 农药类别中,中国在全球市场的份额最高,达到33%。
1. interstellar medium is different than what people think as a perfect vacuum 里面包含matter和dust
2. cosmic dust不是uniform存在的,有比较密集的地方会阻挡star的光线。
3. Astronomers会观察到他们的形状,大小和组成,尽管他们很远
4. 一个比较重要的发现就是starlight 穿过interstellar dust 会看起来dimmer 和红,分析就好像地球上的物体导致太阳更红一样,是红蓝光的穿透吸收问题
5. 结论星光被蓝光吸收是因为他的大小比红光波长小,和蓝光波长差不多,举例就像比海浪低的石头不影响海浪