It's very bad for your ______ to read in the sun. [ ]
A. eyes
B. hands
C. arms
D. ears
答案:A
不会影响压缩机输出温度上升的原因为()
A.湿气压缩
B.吸入压力降低
C.吐出压力降低
D.压缩比减少
活体供肾的年龄应选择为()
A.任何年龄
B.5-80岁
C.20-30岁
D.18-70岁
E.18岁以上