汽轮机危急保安器应在()额定转速范围内动作。
A.110-112%
B.120%
C.140%
参考答案:A
.—Sally, where is your homework?
—Sorry, Ms Zhao. I left it at home. I will_______it to school tomorrow.
A.take
B.bring
C.carry
D.put
诊断慢性血管内溶血最有意义的阳性结果是()
A.尿胆原阳性
B.黄疸
C.尿含铁血黄素试验阳性
D.血清间接胆红素阳性
E.抗人球蛋白试验阳性