第1腰椎体表定位标志为
A.胸骨体中点B.胸骨剑突末端C.剑突末端与肚脐连线中点D.脐上3cmE.脐
参考答案:C
解析:第一腰椎体表定位标志:剑突末端与肚脐连线中点。
—Look! Lily and Sally are cleaning the school laboratory.
—Let’s go and join them. .
A.Many hands make light work
B.The early bird catches the worm
C.A friend in need is a friend indeed
D.The grass is always greener on the other side
静电最大的危害是()。
A.形成静电场
B.产生静电压
C.出现静电放电现象
D.产生静电流