题目内容

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

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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

喷雾干燥设备的心脏是。

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%

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