地球的平均密度为（ ）。 A: 2.60 g/cm3 B: 3.00g/cm3 C: 4.64g/cm3 D: 5.51g/cm3

9.19，4.27，5.35，2.43，（） A: 3.51 B: 5.51 C: 5.60 D: 8.60

5.51单片机的程序储存器只是用来存放程序的。

与二进制数101.01011等值的十六进制数为______。 A: B B: 5.51 C: 51 D: 5.58

与二进制数101.01011等值的十六进制数为() A: 5.58 B: 5.51 C: 5.50 D: 5.5

与二进制数101.01011等值的十六进制数为 [br][/br] (单选题) (单选题) A: A. B: 5.51 C: A.51 D: 5.58

健康成人男性红细胞的正常值为( ) A: (3.0～5.01×1012/L B: (4.5～6.5)×1012/L C: (3.5～5.0)×1012/L D: (3.5～5.5)×1012/L E: (4.0～5.51×1012/L

智慧职教: 某船标准海水中吃水为5.51 m时排水量Δ=5484 t,TPC=12.4 t/cm,现该轮从标准海水区域驶入标准淡水区域中,则船舶吃水变为( )m 。

某船标准海水中吃水为5.51m时排水量Δ=5484t，TPC=12.4t/cm，现该轮从标准海水区域驶入标准淡水区域中，则船舶吃水变为（）m。 A: 5.51 B: 5.62 C: 5.57 D: 5.64

年初剩余的551万农村贫困人口全部脱贫、52个贫困县全部摘帽。 A: All remaining poor rural residents, totaling 55.1 million in early 2020, were lifted from poverty, as were all of China’s remaining 52 poor counties. B: All remained poor rural residents, totaling 5.51 million in early 2020, were lifted from poverty, as were all of China’s remaining 52 poor counties. C: All remaining poor rural residents, totaling 5.51 million in early 2020, were lifted from poverty, as were all of China’s remaining 52 poor counties.