当小汽机真空下降至()kPa,跳闸保护应动作,若保护拒动应不破坏真空紧急停机。
参考答案:-60
关于小儿各期头围的指标,下列哪项是错误的()
A.出生时平均为34cm
B.6个月时平均为44cm
C.1岁平均为46cm
D.2岁时平均为48cm
E.5岁时平均为54cm
Questions 23-29
Stroke victims sometimes refuse to regard their injured sides as parts of their bodies because ______.
A.they cannot see them in mirrors
B.they can no longer locate sensations there
C.they are unwilling to admit their disabilities