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【简答题】
生态系统能量的流动就是通过 （ ）进行的。
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Daily demand for newspapers for the last 10 days has been as follows: 12, 13, 16, 15, 12, 18, 14, 12, 13, 15 (listed from oldest to most recent). Forecast sales for the next day using a three-day weig...
A.
12.8
B.
13.0
C.
70.0
D.
14.0
E.
None of the above
【单选题】The Rising Oil Price Could the bad old days of economic decline be about to return? Since OPEC agreed to supply-cuts in March, the price of crude oil has jumped to almost $ 26 a barrel, up from less t...
A.
global inflation
B.
reduction in supply
C.
fast growth in economy
D.
Iraq’s suspension of exports
【多选题】有关嗜酸性粒细胞的描述正确的是_________
A.
是白细胞中数量最少的一种
B.
嗜酸性颗粒内有溶酶体酶
C.
能释放组织胺
D.
能抑制过敏反应
E.
可杀灭寄生虫
【简答题】By the end of last month, we were 10 days behind schedule. ( )
【多选题】有关嗜酸性粒细胞的描述正确的是
A.
外周血嗜酸性粒细胞日间变化可达30多倍
B.
寄生虫感染时可显著增高
C.
变态反应性疾病时降低
D.
猩红热急性期升高
E.
成人参考值为：(0.05～0.5)×109/L
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