下列哪项是肠外营养最严重的技术并发症
A．局部出血B．气胸C．空气栓塞D．损伤胸导管E．臂丛神经损伤
参考答案：C
软件设计中划分程序模块通常遵循的原则是要使各模块间的耦合性尽可能 【5】 。
计算题
1.
Answer:
2. Bill is eighteen years old, and his age is three times that of Mary.
When Billis twice as old as Mary, how old is he then?
