肱骨中段骨折，患肢腕不能背伸，各指掌指关节不能主动伸直，其原因可能是（）。
A. 由于骨折使患肢运动支架断裂
B. 由于伸腕肌损伤
C. 正中神经损伤
D. 桡神经损伤
E. 尺神经损伤
查看答案
进行金融票据诈骗活动，数额较大的，应处有期徒刑或者拘役、罚金的情形有哪些？
选址决策者的个人因素（如个人偏好、个人社会关系等）影响到服务企业选址决策。
A. 正确
B. 错误
The network administrator has enabled BPDU guard on the LAN. Why is an effective way to prevent an unauthorized rogue switch from altering the spanning-tree topology of this network？ （）
A. BPDU guard can be used to prevent invalid BPDUs from propagating throughout the network.
BPDU guard can guarantee proper selection of the root bridge.
C. BPDU guard can be utilized to prevent the switch from transmitteing BPDUs and incorrectly altering the root bridge election.
D. BPDU guard can be utilized along with PortFast to shut down ports when a switch is connected to the port.
E. None of the other alternatives apply
微信支付 
支付宝支付