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酸气中的哪些杂质可能产生副反应？

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1850TSS-320支持的最大LSPOAM实例数为20K。

A. 正确
B. 错误

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已知轧前H＝60mm、轧后高度h＝30mm，轧辊直径D＝250mm，转速n＝120转/分，变形区长度L＝55mm，请计算变形速度？（精确到小数点后1位）

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当轧制薄带钢宽展为零时，此时横向应力是否也为零？三个主应力应该是什么关系？当三个主应力分别为+60MPa、-80MPa、-220MPa，画出其应力及变形图示。

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You work as the enterprise exchange administrator at Xxx .The Xxx network consists of a domain named xxx . Xxx has three Exchange Server 2007 mail servers named XXX-EX01， XXX-EX02 and XXX-EX03 that has the following implementation： records.What action must you take to make sure of the availability of the mailboxes on XXX-EX03 if the employees utilize the Exchange ActiveSync after the instrallation of XXX-EX04？（）

A. You should use Basic authentication on Exchange ActiveSync and set up only Basic authentication on the RPC virtual directory.
B. You should use NTLM authentication on the RPC virtual directory.
C. You should use Microsoft Challenge Handshake Authentication Protocol version 2 （MS-CHAP v2） on XXX-EX01.
D. You should use the anonymous setting in the authentication type for the Microsoft-Server-ActiveSync virtual directory on XXX-EX01.

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