管壳式废热锅炉属于()。
A、压力容器
B、锅炉
参考答案:A
— What's _____ last name?
— Miller. [ ]
A. his
B. you
C. she
儿童正常颅内压为()
A.50~100mmH2O
B.50~120mmH2O
C.50~200mmH2O
D.70~150mmH2O
E.70~200mmH2O