损伤性气胸行闭式引流的常用位置为伤侧()
A.锁骨中线第1肋间
B.锁骨中线第2肋间
C.锁骨中线第3肋间
D.腋中线第7肋间
E.腋中线第8肋间
参考答案:B
标有“220V 40W”的两灯串联后接到220V电路中,两灯的实际功率之和是( )
A.20W
B.40W
C.60W
D.80W
When the war broke out,people had to__________their unnecessaries and put away the valuable to
flee away with the necessities.[ ]
A. abandon
B. release
C. discourage
D. resign