下列属于老年人的功能变化的是（） ["性腺和肌肉萎缩","视力、听力下降","细胞结构改变","免疫力下降","心肺功能减退"]
妇女骨盆倾斜度的正常值是（） ["45°","50°","60°","65°","70°"]
对影像半影模糊的控制阈值为（） ["0.02mm","0.20mm","0.25mm","0.5mm","0.6mm"]
作为X线照片影像的可供诊断的密度范围是（） ["0.5～1.0","0.5～2.0","0.25～2.0","0.25～2.5","0.5～2.5"]
阿司匹林的pKa=3.5，它在pH为7.5肠液中可吸收约（） ["1%","0.1%","0.01%","10%","99%"]
钢包炉处理时加热制度是什么？
