高加水位HH时,应联关(),关本级()。
参考答案:上一级正常疏水、抽汽隔离门
201. Tom _____ into the house when no one .
A.slipped; was noticing
B.had slipped; noticed
C.slipped; had noticed
D.was slipping; noticed
诊断肾性骨病的金指标是
A.血PTH水平B.活性维生素D3水平C.骨活检D.血钙测定E.铝的测定