患者，男，30岁，腹部被自行车碾过，尚未明确诊断，观察期间错误的处理是（）。
A. 禁饮禁食
B. 注射吗啡止痛
C. 反复检查腹部
D. 绝对卧床休息
E. 检测血压、脉搏
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TD-SCDMA系统的物理信道采用三层：物理层（L1）、数据链路层（L2）、网络层（L3）。
A. 正确
B. 错误
动脉血流经组织时，接受__________放出__________，转变为静脉血的过程称为组织换气。
汽车变速器通过换档，可在发动机输出功率不变的情况下（）。
A. 获得不同的速度和牵引力
B. 决定装载货物的多少
C. 减轻司机的劳动强度
You need to recommend a backup strategy for Hyper-V. What should you recommend？（）
A. Take a snapshot of each VM， and then run a full backup of the Hyper-V hosts by using Windows Server Backup.
B. Shut down the VMs，and then run a full backup of the Hyper-V hosts by using Windows Server Backup. Restart the VMs when the backup is complete.
C. From each VM,run a full backup by using Windows Server Backup， and then run a full backup of the Hyper-V hosts by using Windows Server Backup.
D. From each VM,run a full backup by using Windows Server Backup. Shut down the VMs， and then run a full backup of the Hyper-V hosts by using Windows Server Backup. Restart the VMs when the backup is complete.
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