市场机制作为市场经济最基本的调节机制,其特点是()。
A. 独立性、滞后性、客观性、自发性、灵活性
B. 客观性、关联性、自发性、灵活性、超前性
C. 关联性、自发性、滞后性、客观性、灵活性
D. 自发性、机械性、关联性、滞后性、客观性
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为银行带来的收入与银行投入的成本基本持平的客户是银行的()。
A. 微利客户
B. 高价值客户
C. 保本客户
D. 一般客户
Which three statements are true about the Internet Group Management Protocol (IGMP)? ()
A. There are three IGMP modes: dense mode, sparse mode, and sparse - dense mode
B. IGMP is used to register individual hosts with a multicast group
C. IGMP version 3 enables a multicast receiving host to specify to the router which sources it should forward traffic from
D. IGMP messages a re IP datagrams with a protocol value of 2, destination address of 224.0.0.2, and a TTL value of 1
E. IGMP is a multicast routing protocol that makes packet - forwarding decisions independent of other routing protocols such as EIGRP
F. IGMP snooping ru ns on Layer 3 router
压力容器发生爆炸时,大多数液化气体生成的蒸气的体积为液态时的()倍。
A. 三四十
B. 二三百
C. 100
D. 500