碘缺乏对成人最明显的影响是()。
A.患“大肚子病”
B.骨质疏松
C.甲状腺肿
参考答案:C
垄断为地方保护和腐败提供了土壤。
Which of the following commands is not for communication among users
A.mail
B.write
C.telnet
D.nice