When the Americans sing their national anthem on formal occasions, they will sing
All of the song
B. The 1st stanza
C. The 1st and 2nd stanzas
D. The last stanza
查看答案
When did Barbie Doll first appeared in public?
A. 1949
B. 1950
C. 1958
D. 1959
The USA has no national emblem.
A. 对
B. 错
王某,车祸致左下胸部外伤,急诊B超提示“脾破裂”,脉搏细速90次/分,血压86/40mmHg。休克指数常可用于判断创伤患者的失血情况,通过计算该患者休克指数预计失血量达循环血量的
A. 10%~20%
B. 20%~30%
C. 30%~40%
D. 40%~50%
E. 50%~60%