输血原则是（） A.输同型血、交叉配血的主侧和次侧都不凝 B.紧急情况可大量输O型血
题型：单项选择题
问题：
输血原则是（）
A.输同型血、交叉配血的主侧和次侧都不凝
B.紧急情况可大量输O型血给其他血型的受血者
C.只要交叉配血主侧不凝，就可以输血
D.只要血型相同，可不做交叉配血
E.第一次配血相合，输血顺利，第二次接受同一献血员，血液不必做交叉配血
题型：单项选择题
根据短文内容，从下面方框中选择适当的短语填空，使短文内容完整正确。
President Xi Jinping came to the Qing Feng Steamed Dumpling Shop for lunch on December 28th, 2013. Since then, the set meal of the president has been popular in China. Sun, a 33-year-old soldier, could have been home on Monday if he had 小题1: from Weifang, Shandong province. He would go 小题2: to Liaoning province. But he chose to change trains in Beijing with his five boxes. Sun arrived at the shop at about noon to join a line 小题3: 50 meters long. After waiting for nearly half an hour, he took his "president's meal". Then Sun joined another line to wait for a chance to sit in Xi's seat and have his photo taken there. Sun then quickly moved to another table because of 小题4: people who were waiting for their turns to be photographed at Xi's table. "The greatest honor I had during my stay in Beijing was to have a set meal of the president," he said. After getting one more photo of himself in front of the shop, Sun 小题5: to the train station.
史，也是中 * * 抗争的历史。揭开中国近代史序幕的事件是 [ ]