韩国有极为先进的电影工业体系，所以生产出了能屹立于世界电影之林的佳作。()
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人才培养不足与创作环境优化的缺失，是我国目前文化产品相对低迷的根本原因。()
《歌剧魅影》《猫》等舞台剧，也是“美国制造”的产品。()
即使是在高自由度的制造体系下，影视剧也难以进行流水线化大生产。()
ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets？ (Choose two)
A. They acknowledge receipt of TCP segments.
B. They guarantee datagram delivery.
C. They can provide hosts with information about network problems.
D. They are encapsulated within IP datagrams.
E. They are encapsulated within UDP datagrams.
F. They are encapsulated within TCP datagrams.
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