江泽民国防和军队建设思想，是毛泽东军事思想、邓小平新时期军队建设思想的继承和发展，是“三个代表”重要思想在新的形势下，我国国防和军事领域当中的集中体现。
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计量学包括测量（）和（）的所有方面.
A. 理论
B. 真实值
C. 误差值
D. 实践
下列有关传染病的说法不正确的是（）。
A. 传染病是指能够在人群中引起流行的感染性疾病
B. 不存在人与动物之间的相互传染
C. 有地方性、季节性
D. 疾病发展具有潜伏期
Which three of these statements about penultimate hop popping are true？（）
A. It is used only for directly connected subnets or aggregate routes.
B. It can only be used with LD
C. It is only used when two or more labels are stacked.
D. It enables the Edge LSR to request a label pop operation from its upstream neighbors.
E. It is requested through TDP using a special label value that is also called the implicit-null value.
F. It is requested through LDP using a special label value that is also called the implicit-null value.
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