转化炉的引风机必须先开挡板,然后按动电钮启动。
参考答案:错
When our personal interests are _____ those of people, we should put people's interests before our own. [ ]
A. conflicting
B. in conflict with
C. conflict with
D. in conflict against
先天性甲状腺功能减低症的临床特征是()
A.骨龄落后于年龄,上部量大于下部量,智力低
B.骨干骺端增宽、呈毛刷状,睡眠不安,食欲差
C.体态均匀矮小,智力正常
D.体格矮小,长骨短,指趾粗,智力正常
E.四肢短小,长骨短粗,干骺端增宽,智力正常