You have an Exchange Server 2010 organization.In Site 1 are 5 CAS servers and a CAS array named array1.This Site 1 only has access to internet.In a second site， Site 2， plan to deploy 2 CAS servers and a CAS array named array2.Users connect through OWA inside and outside of the network. You need to configure namespaces for OWA Virtual Directories. What should you do for all CAS in Site 2？（）
A. Set the internal URL to array2.contoso.com.Set external URL to $null.
B. Set the internal URL to array2.contoso.com.Set external URL to array1.contoso.com.
C. Set the internal URL to CAS name.Set external URL to $null.
D. Set the internal URL to CAS name.Set external URL to array1.contoso.com.
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下列各项中，不属于票据行为的是（）。
A. 出票人签发票据并将其交付给收款人的行为
B. 票据遗失向银行挂失止付的行为
C. 汇票付款人承诺在汇票到期日支付汇票金额并签章的行为
D. 票据债务人以外的人，为担保特定债务人履行票据债务而在票据上记载有关事项并签章的行为
平面刮刀中精刮刀其槽角β磨成97.5°左右，刀刃圆环半径应比细刮刀小些。（）
A. 正确
B. 错误
物理风化作用（physical weathering）
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