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【单选题】
设【图片】在点【图片】处可微，是【图片】在点【图片】处连续的A.
充分且必要条件
B.
必要非充分条件
C.
充分非必要条件
D.
即非充分也非必要条件
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举一反三
【单选题】下列不属于电气防爆基本措施的是（ ）。
A.
采用防爆的电气设备
B.
设置漏电火灾报警和紧急断电装置
C.
严格控制电气设备的温度
D.
宜将正常运行时产生火花、电弧和危险温度的电气设备和线路，布置在爆炸危险性较小或没有爆炸危险的环境内
【简答题】下列不属于电气防爆基本措施的是( )。 A.采用防爆的电气设备 B.设置漏电火灾报警和紧急断电装置 C.严格控制电气设备的温度 D.宜将正常运行时产生火花、电弧和危险温度的电气设备和线路，布置在爆炸危险性较小或没有爆炸危险的环境内
【单选题】You are developing a Windows Communication Foundation (WCF) service that allows customers to update financial data. The client applications call the service in a transaction. The service contract is d...
A.
Insert the following line at line 22: throw;
B.
Insert the following line at line 09: [ServiceBehavior(TransactionAutoCompleteOnSessionClose=false)]
C.
Replace line 12 with the following line: [OperationBehavior(TransactionScopeRequired=true, TransactionAutoComplete= false)]
D.
Insert the following line at line 09.: [ServiceBehavior(TransactionAutoCompleteOnSessionClose=true)]
【单选题】You are modifying a Windows Communication Foundation (WCF) service that allows customers to update financial data. The service currently requires a transaction from the client application and is worki...
A.
Replace line 05 with the following code. [TransactionFlow(TransactionFlowOption.NotAllowed)]
B.
Replace line 13 with the following code. [OperationBehavior(TransactionScopeRequired=false, TransactionAutoComplete=true)]
C.
Replace line 05 with the following code. [TransactionFlow(TransactionFlowOption.Allowed)]
D.
Replace line 13 with the following code. [OperationBehavior(TransactionScopeRequired=false, TransactionAutoComplete=false)]
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