The year 2021 sees large-scale 5G industry applications.
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In promoting the industrial use of 5G, Huawei firstly launched 5GtoB as a one-stop solution.
A. True.
B. False.
5G should be based on the cooperation of multiple partners instead of separate efforts of individual companies.
A. True.
B. False.
关于主动脉的描述错误的是( )
A. 是全身最粗大的动脉
B. 是体循环动脉的主干
C. 分为升主动脉、主动脉弓和降主动脉
D. 主动脉弓有左、右头臂干两大分支
E. 降主动脉分为胸主动脉和腹主动脉
当颞区颅骨骨折时,易损伤的动脉是( )
A. 面动脉
B. 颞浅动脉
C. 脑膜中动脉前支
D. 脑膜中动脉后支
E. 以上都不对
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