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【单选题】
土壤容重为(),保肥能力强,透气和透水性良好。
A.
1.1—1.5g/cm3
B.
1.1—1.4g/cm3
C.
1.0—1.3g/cm3
D.
1.1—1.3g/cm3
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参考答案:
举一反三
【单选题】继承是Java语言的-个重要机制,所有的Java类都继承自根类( )。
A.
Class
B.
Object
C.
String
D.
Date
【单选题】下图所示的系统属于
A.
开环系统
B.
闭环系统
C.
双环系统
D.
单环系统
【简答题】Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or, in summer, they may thin...
【判断题】无论是否声明,子类都继承自object(System.object)类。()
A.
正确
B.
错误
【单选题】—You look stressed out. —Yeah, too _____ work makes me tired. [     ]
A.
little
B.
many
C.
much
D.
more
【判断题】下图所示的数控系统属于多CPU数控系统。
A.
正确
B.
错误
【简答题】Are you sometimes a little tired and sleepy in the early afternoon? Many people feel this way after lunch. They may think that eating lunch is the cause of the sleepiness. Or, in summer, they may thin...
【简答题】Most of us, as writers, tend to be a little indiscriminating in word choice, thinking the red color is just “ red ” , a machine makes just “ a noise ” , and a suface is either “ hard ” or “ so...
【单选题】Mary is so careful that she makes ______  mistakes in her work. [     ]
A.
few
B.
many
C.
little
D.
a little
【多选题】灵活型课后作业的评价应
A.
纸笔测验检验
B.
打造核心素养
C.
提高综合素质
D.
发展学习能力
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