为提高水泥品质，水泥颗粒的细度越细越好。（）
参考答案：错
气管插管的并发症一般不包括
A．下颌关节脱位
B．心脏骤停
C．气胸
D．喉头水肿
E．导管插入过深误入一侧主支气管，而另一侧出现肺不张
The most famous alumnus of the college were invited to participate in the graduation ceremony and related activities scheduled for late May.
