业主方项目管理的最核心问题是其( )。
A．组织结构
B．管理模式
C．组织模式
D．管理结构
参考答案：A
补全对话（在横线上填入适当的单词，短语或句子，使对话完整）
A: Hi, John!
B: Hello, Xiao Lin. Come to meet my 1. _____
Dad, this is Xiao Lin. Xiao Lin this is 2. _____
A: Good morning, Mr Brown.
C: 3. _____,Xiao Lin?
A: How do you do?
B: Mom, this is my friend, Xiao Lin.
A: Nice to meet you.
D: 4. _____
B: And these are my grandparents.
E: Hi, Xiao Lin!
A: Hello!
B: And this is my sister, Mary, and this is 5. _____, Jim.
车削工件外圆时圆度超差，与机床有关的因素有哪些？
