题目内容

数字式电压表的测量速率取决于()

A. 时钟脉冲的频率
B. 基准电压的高低
C. 电源电压的高低
D. 电源电压的频率

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某化工厂电解车间液氯工段包装岗位,在充装钢瓶时发生爆炸,3人当场死亡,2人受伤。当班的3人负责在包装台灌液氯钢瓶,2人负责推运钢瓶。这一批次灌装钢瓶之前有装过环氧丙烷类的有机物。灌装钢瓶当需要灌装时,这2人在察看了157号(容量半吨)钢瓶的合金堵和外观,认为无问题,即推上了磅秤,操作者未认真抽空即充氯,充氯1分钟后,157号瓶发生猛烈爆炸。瓶体纵向开裂,并向相反方向弯曲,还有许多碎块四处飞溅。3人当场死亡,2人轻伤。这次事故的直接原因是()。

A. 钢瓶内存有环氧丙烷
B. 管理混乱
C. 违章操作

You are implementing an ASP.NET application that includes a page named TestPage.aspx. TestPage.aspx uses a master page named TestMaster.master.You add the following code to the TestPage.aspx code-behind file to read a TestMaster.master public property named CityName. Protected Sub Page_Load(ByVal sender As Object,ByVal e As System.EventArgs) Handles Me.LoadDim s As String = Master.CityNameEnd Sub You need to ensure that TestPage.aspx can access the CityName property. What should you do?()

Add the following directive to TestPage.aspx.
B. Add the following directive to TestPage.aspx.
C. Set the Strict attribute in the @ Master directive of the TestMaster.master page to true.
D. Set the Explicit attribute in the @ Master directive of the TestMaster.master page to true.&e

天然肠衣在使用前应剔除破损和变质的部分。

A. 正确
B. 错误

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