皮皮学，免费搜题
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【单选题】
肺炎患儿出现严重腹胀、肠鸣音消失是由于
A.
消化功能紊乱
B.
低钠血症
C.
低钾血症
D.
中毒性肠麻痹
E.
中毒性脑病
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举一反三
【单选题】系统规划的工作成果的形式是
A.
系统设计说明书
B.
系统说明书
C.
信息系统总体方案
D.
信息系统开发任务书
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【单选题】如图所示,两个啮合齿轮,小齿轮半径为10cm,大齿轮半径为20cm,大齿轮中C点离圆心O 2 的距离为10cm,A、B分别为两个齿轮边缘上的点,则A、B、C三点的( ) 提示:同缘传动时,边缘点的线速度相等;同轴传动时,角速度相等;然后结合v=ωr列式求解
A.
线速度之比为2：1：1
B.
角速度之比为2：2：1
C.
向心加速度之比为4：2：1
D.
转动周期之比为2：1：1
查看完整题目与答案
【单选题】Why does cream go bad faster than butter? Some researchers think they find the answer, and it comes down to the structure of the food, not its chemical composition—a finding that could help rid some p...
A.
it suggested a way to keep some foods fresh without preservatives
B.
it discovered tiny globules in both cream and butter
C.
it revealed the secret of how bacteria multiply in cream and butter
D.
it found that cream and butter share the same chemical composition
查看完整题目与答案
【单选题】“ 金 首饰”、“ 男 服务员”、“ 打工 妹”中下加线的词都是
A.
体词
B.
谓词
C.
代词
D.
区别词
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【判断题】祖母绿中重要的商业产地是哥伦比亚
A.
正确
B.
错误
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【单选题】Why does cream go bad faster than butter? Some researchers think they have the answer, and it comes down to the structure of the food, not its chemical composition---a finding that could help rid some...
A.
it suggested a way to keep some foods fresh without preservatives
B.
it discovered tiny globules in both cream and butut
C.
it revealed the secret of how bacteria multiply in cream and butter
D.
it found that cream and butter share the same chemical composition
查看完整题目与答案
【单选题】系统分析阶段的工作总结或成果的表现形式是（）。
A.
数据流程图
B.
系统分析报告
C.
总体规划
D.
系统逻辑模型
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【单选题】设窗体中有标签Label1和按钮Command1,()语句可实现单击Command1后Label1中文字颜色变红色。
A.
Label1.ForeColor=RGB(255,0,0)
B.
Command1.ForeColor=RGB(255,0,0)
C.
Label1.BackColor=RGB(255,0,0)
D.
Command1.BackColor=RGB(255,0,0)
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【简答题】函数 y= 3 x-4 中自变量x的取值范围是______，函数 y= 3x-9 中自变量x的取值范围是______．
查看完整题目与答案
【单选题】Why does cream go bad faster than butter? Some researchers think they found the answer, and it comes down to the structure of the food,not its chemical composition--a finding that could help rid some ...
A.
it suggested a way to keep some foods fresh without preservatives
B.
it discovered tiny globules in both cream and butter
C.
it revealed the secret of how bacteria multiply in cream and butter
D.
it found that cream and butter share the same chemical composition
查看完整题目与答案
相关题目：
【单选题】系统规划的工作成果的形式是
A.
系统设计说明书
B.
系统说明书
C.
信息系统总体方案
D.
信息系统开发任务书
查看完整题目与答案
【单选题】如图所示,两个啮合齿轮,小齿轮半径为10cm,大齿轮半径为20cm,大齿轮中C点离圆心O 2 的距离为10cm,A、B分别为两个齿轮边缘上的点,则A、B、C三点的( ) 提示:同缘传动时,边缘点的线速度相等;同轴传动时,角速度相等;然后结合v=ωr列式求解
A.
线速度之比为2：1：1
B.
角速度之比为2：2：1
C.
向心加速度之比为4：2：1
D.
转动周期之比为2：1：1
查看完整题目与答案
【单选题】Why does cream go bad faster than butter? Some researchers think they find the answer, and it comes down to the structure of the food, not its chemical composition—a finding that could help rid some p...
A.
it suggested a way to keep some foods fresh without preservatives
B.
it discovered tiny globules in both cream and butter
C.
it revealed the secret of how bacteria multiply in cream and butter
D.
it found that cream and butter share the same chemical composition
查看完整题目与答案
【单选题】“ 金 首饰”、“ 男 服务员”、“ 打工 妹”中下加线的词都是
A.
体词
B.
谓词
C.
代词
D.
区别词
查看完整题目与答案
【判断题】祖母绿中重要的商业产地是哥伦比亚
A.
正确
B.
错误
查看完整题目与答案
【单选题】Why does cream go bad faster than butter? Some researchers think they have the answer, and it comes down to the structure of the food, not its chemical composition---a finding that could help rid some...
A.
it suggested a way to keep some foods fresh without preservatives
B.
it discovered tiny globules in both cream and butut
C.
it revealed the secret of how bacteria multiply in cream and butter
D.
it found that cream and butter share the same chemical composition
查看完整题目与答案
【单选题】系统分析阶段的工作总结或成果的表现形式是（）。
A.
数据流程图
B.
系统分析报告
C.
总体规划
D.
系统逻辑模型
查看完整题目与答案
【单选题】设窗体中有标签Label1和按钮Command1,()语句可实现单击Command1后Label1中文字颜色变红色。
A.
Label1.ForeColor=RGB(255,0,0)
B.
Command1.ForeColor=RGB(255,0,0)
C.
Label1.BackColor=RGB(255,0,0)
D.
Command1.BackColor=RGB(255,0,0)
查看完整题目与答案
【简答题】函数 y= 3 x-4 中自变量x的取值范围是______，函数 y= 3x-9 中自变量x的取值范围是______．
查看完整题目与答案
【单选题】Why does cream go bad faster than butter? Some researchers think they found the answer, and it comes down to the structure of the food,not its chemical composition--a finding that could help rid some ...
A.
it suggested a way to keep some foods fresh without preservatives
B.
it discovered tiny globules in both cream and butter
C.
it revealed the secret of how bacteria multiply in cream and butter
D.
it found that cream and butter share the same chemical composition
查看完整题目与答案