You review the Failed Attempts logs on an AAA server and find: "unknown network access server error." Which failure could produce this error?()
A. failure of the wireless client and AAA server handshake
B. supplicant authentication failureAAA client and AAA server handshake failure
C. wrong password used by the supplicant
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下列关系相近的一组生物是()
A. 玉米和大豆
B. 鱼和水草
C. 空气和水
D. 岩石和苔癣
旋涡泵的工作原理是:液体在纵向旋涡的作用下,使其吸入至排出的整个过程中,可以()次进入和流出叶轮增加能量。
A. 1
B. 2
C. 3
D. 多次