营销中产品具体可以划分为五个层次，其中“核心产品所展示的全部外部特征”，指的是哪个层次。 A.
期望产品 B.
延伸产品 C.
形体产品 D.
潜在产品

单项选择题患者经过治疗后，支气管胸膜瘘痊愈。术后病理：右肺上叶尖后段不规则形低分化腺癌，部分为大细胞癌，大小约5．0 cm×4．0 cm×4．0 cm，癌组织浸润支气管壁全层及肺膜，支气管切缘未见癌组织，肺门淋巴结与支气管旁淋巴结转移性低分化腺癌。术后分期哪项是正确的是A.T2N1M0B.T3N2M0C.T1N1M0D.T2N2M0E.T3N1M0

单项选择题Suppose an astronaut landed on a planet where g=19.6 m s2. Compared to earth, would it be for her to catch a ball that is moving horizontally at 12 m s? (Assume that the astronaut’s spacesuit is a lightweight model that doesn’t impede her movements in any way.) （ ） A. easier B. harder C. just as easy D. More information is needed to determine