粒/红比值是指() ["粒细胞系统细胞总和与有核红细胞总和之比","粒细胞系统细胞总和与成熟红细胞数量之比","骨髓有核细胞总数与成熟红细胞数量之比","粒细胞系统细胞总和与红细胞系统总和之比","骨髓有核细胞总数与有核红细胞总和之比"]
螺杆式制冷压缩机具有一对互相啮合、相同旋向的螺旋形齿的转子。
长期口服抗癫痫药易发生() ["肾功能不全","心功能不全","肝功能损害","肺功能减退","脑功能减退"]
SCGP中煤炭的能量分为几个部分?() ["热损","粗合成气","蒸汽","未燃烧煤粉"]
下列哪种颗粒在血小板内不存在() ["α颗粒","β颗粒","A颗粒","糖原颗粒","致密颗粒"]
起吊内燃、电力机车时,应注意哪些事项?