液压舵机中的自动安全切换装置能在必要时自动使()。
A. 漏泄油路油泵停用转用备用泵
B. 与故障系统有关的一对转舵油缸被隔离且旁通
C. 舵机动力转为应急动力源
D. A+B
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四行程发动机完成一次工作循环,进排气门各开闭()。
A. 两次
B. 一次
C. 三次
D. 四次
Your company has an active directory domain named ad.contoso.com all client computers run windows vista. The company has recently acquired a company that has an active directory domain named ad.fabrikam.com. a two-way forest trust is established between the ad.fabrikam.com domain and the ad.contoso.com domain. You need to edit the ad.contoso.com domain group policy object (GPO) to enable users in ad.contoso.com domain to access resources in the ad.frabrikam.com domain.What should you do?()
A. Configure the DNS suffix searc List option to ad.contoso.com, ad.fabrikam.com .
B. Configure the allow DNS suffix appending to unqualified milti-label name queries option to true.
Configure the primary DNS suffix to ad.contoso.com, ad.fabrikam.com. configure the primary DNS suffix devolution option to true.
D. Configure the primary DNS Suffix to ad.contoso.com, ad.fabrikam.com. configure the primary DNS suffix devolution option to false.
色谱定量中的归一化法的要求是()。
A. 样品中被测组分有响应产生色谱峰
B. 大部分组分都有响应,产生色谱峰
C. 所有组分都有响应,并都产生色谱峰