心搏呼吸骤停早期有效的抢救措施是（）.
A.心脏三联针
B.开胸心脏按压
C.口对口人工呼吸加胸外心脏按压
D.电击除颤
E.低温疗法
参考答案：C
It is a tradition for the Chinese to ______ about the bush, which sometimes makes foreigners
puzzle or misunderstand what you are saying. [ ]
A. go
B. eat
C. beat
D. wander
喷焊刚度大、结构复杂的构件，特别是复杂的铸铁件，应采用（）预热和缓冷，以避免产生裂纹。
A.局部
B.整体
C.高温
ying. [ ]