用光学经纬仪测量水平角与竖直角时，度盘与读数指标的关系是（）。
A. 水平盘转动，读数指标不动；竖盘不动，读数指标转动
B. 水平盘转动，读数指标不动；竖盘转动，读数指标不动
C. 水平盘不动，读数指标随照准部转动；竖盘随望远镜转动，读数指标不动
D. 水平盘不动，读数指标随照准部转动；竖盘不动，读数指标转动
患者男，23岁，搬重物后突发出现胸闷，胸痛，活动后明显心悸、气促。查体：HR124次/min，BP135/45mmHg；双肺呼吸音对称，胸骨左侧第2、3肋间可闻及连续性的杂音，肺动脉瓣听诊区第二心音增强。经抗心力衰竭治疗，患者症状无好转反而加重，下一步如何处理（）
A. 继续保守治疗，直至心功能好转
B. 尽快手术治疗
C. 气管插管，呼吸机辅助呼吸
D. 加强强心利尿处理，待心功能平稳后再手术
E. 心脏移植手术
You work as a network technician at Company. Your boss, Mrs. , is interested in switch spoofing. She asks you how an attacker would collect information with VLAN hoping through switch spoofing. You should tell her that the attacking station... （）
A. ...uses VTP to collect VLAN information that is sent out and then tags itself with the domain information in order to capture the data.
B. ...will generate frames with two 802.1Q headers to cause the switch to forward the frames to a VLAN that would be inaccessible to the attacker through legitimate means.
C. ...uses DTP to negotiate trunking with a switch port and captures all traffic that is allowed on the trunk.
D. ...tags itself with all usable VLANs to capture data that is passed through the switch， regardless of the VLAN to which the data belongs.
E. None of the other alternatives apply
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