药品经营企业只有销售地道中药材时，才必须标明产地。
A. 正确
B. 错误
Which two statements are true about Internet Group Management Protocol (IGMP) snooping?（）
A. IGMP snooping and Cisco Group Membership Protocol (CGMP) can be used simultaneously on a switch.
B. IGMP snooping a nd Cisco Group Membership Protocol (CGMP) were developed to help Layer 3 switches make intelligent forwarding decisions on their own.
C. IGMP snooping examines IGMP join/leave messages so that multicast traffic is forwarded only to hosts that sent an IG MP message toward the router.
D. IGMP snooping is an IP multicast constraining mechanism for Layer 2 switches.
E. IGMP snooping is enabled with the ip multicast - routing global configuration command.
确保实现领域目标，教师一定要结合本班幼儿的实际发展水平和特点、幼儿的家庭成长环境等，将领域目标逐层分解。
A. 正确
B. 错误
甲上市公司公布了其上一年年度报告，根据规定，在报告中应提供截至报告期末公司前3年的主要会计数据和财务指标，这些数据和指标主要包括（）。 Ⅰ营业收入 Ⅱ归属于上市公司股东的净利润 Ⅲ经营活动产生的现金流量净额 Ⅳ归属于上市公司股东的扣除非经常性损益的净利润 Ⅴ归属于上市公司股东的净资产
A. Ⅱ、Ⅳ
B. Ⅰ、Ⅲ、Ⅳ
C. Ⅱ、Ⅲ、Ⅳ、Ⅴ
D. Ⅰ、Ⅱ、Ⅲ、Ⅴ
E. Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ
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