下列键能大小顺序中正确的是（） A: O＜O＜O B: O＜O＜O C: O＜O＜O

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颗粒材料的密度ρ、表观密度ρo。与堆积密度ρ′o之间，下列关系中何者是正确的( ) A: ρo＞ρ＞ρ′o B: ρ＞ρo＞ρ′o C: ρ′o＞ρo＞ρ D: ρ＞ρ′o＞ρo

听o说o珠o海o海o泉o湾o比o较o高o级o,不o知o道o温o泉o票o价o贵o不o贵o?

The combining forms for color red and black are ____________. A: erythr/o and melan/o B: erythr/o and leuk/o C: cyan/o and melan/o D: leuk/o and melan/o

已知AB=O，则 （ ） A: A=O B: B=O C: A=O或B=O D: A、B均可为非零矩阵

heart( ). A: cardi/o B: chrom/o C: ton/o D: coron/o

glucose( ). A: muc/o B: gluc/o C: lip/o D: gen/o

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腕关节的功能位,是背伸 A: 0o B: 5 o~15 o C: 20 o~25 o D: 30 o~60 o E: 50 o~60 o