_____ Lucy, and that's Lily.[ ]
A. That's
B. He
C. She
D. Those
答案:A
肺气肿时,心脏浊音界的改变多为
A.心浊音界向左扩大B.心浊音界缩小C.心浊音界向右扩大D.心浊音界向两侧扩大E.以上均非
采用压力表计量张拉力时,应选择(),精度不应低于()级,表面最大读数应为张拉力的1.5~2.0倍。