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【单选题】
堆肥调整 C/N ,以使其分解速度快,腐殖质形成较多,一般是( )A.
B.
50:1—60:1
C.
30:1——40:1
D.
25:1—30:1
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反馈参考答案：
举一反三
【单选题】下列关于算法的叙述中,错误的是( ).
A.
算法是问题求解规则(方法)的一种过程描述,在执行有穷步的运算后结束
B.
算法的设计一般采用由细到粗:由具体到抽象的逐步求解的方法
C.
算法的每一步运算必须有确切的定义,即必须是清楚明确:无二义性的
D.
分析一个算法的好坏,要考虑其占用的计算机资源(如时间和空间)数量:算法是否易理解:易调试和易测试等
【单选题】选择题。 — What do you know Canadians? — I know they ______ English and French. [ ]
A.
about, speak
B.
of, say
C.
of, speak
D.
about, say
【简答题】阅读理解。 Everyone may know tree rings tell us how old a tree is. But do you know they can tell us what the weather was like? A tree grows well in a climate (气候) with lots of sunlight and rainfall (雨量). A...
【简答题】Traffic lights are very important for us. I think you know this. But do you know how they were born? Garrett A. Morgan was the father of traffic lights. He was an American. His family was very poor. H...
【简答题】将下列句子译成汉语 1. An acquaintance is someone whose name you know, who you see every now and then, who you probably have something in common with and who you feel comfortable around. 2. An acquaintance is ...
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