组合臂架法的基本原理是:利用四连杆机构的工作原理,使组合臂架端点在变幅过程中()的轨迹移动,从而使载重在变幅过程中的高度位置不变或变化很小。
A. 沿水平或接近垂直
B. 沿垂直或接近水平
C. 沿水平或接近水平
D. 全部错误
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民警张某、李某在抓捕一吸毒人员过程中,张某掏出手枪先对其口头警告,后鸣枪示警。在警告无效的情况下,张某开枪击伤其腿部后将其抓获。张某使用武器的行为符合人民警察使用警械和武器条例的规定。()
A. 正确
B. 错误
Your company has 10 offices. The offices connect to the Internet by using a WAN link. The offices connect to each other by using a VPN connection. An Active Directory site exists for each office. You plan to deploy Exchange Server 2010. Each site will contain two Exchange Server 2010 servers. You need to recommend the placement of domain controllers and global catalog servers to meet thefollowing requirements: .Minimize the number of domain controllers .Must be able to deliver e-mail messages between users of the same office, if a domain controller and a WAN link fail simultaneously What should you recommend?()
A. In each site, install two global catalog servers.
B. In each site, install two domain controllers. Enable Universal Group Membership caching for each site.
C. In each site, install two domain controllers. Create a publishing point for an offline address list on one Exchange server in each site.
D. In each site, install one domain controller that is configured as a global catalog server.Enable Universal Group Membership caching for each site.
SWIFT费用高,速度慢,不安全
A. 正确
B. 错误