如何打造广播节目的核心竞争力?请结合具体实例说明。
厚度小于()的突出煤层,可直接采用远距离爆破揭穿。
A. 0.5m
B. 0.3m
C. 0.4m
D. 1m
()就是独具特色,与众不同,有独特的贡献,代表了思维的深度。
A. 独创性
B. 求异性
C. 综合性
D. 辩证性
Which of the following statements are true? ()
A. RC4 is a stream cipher
B. Stream ciphers require padding
C. AES is a block cipher
DES and 3DES are stream ciphers
E. AES is a stream cipher
F. AES, DES, and 3DES can be used as HMAC algorithm