单代号网络图中一项工作必须有唯一的一个节点和唯一的一个编号。
查看答案
代号网络图中可以出现循环回路。
A. 对
B. 错
What are the five tips to improve your English fluency?
A. Get Out and Speak regularly!
B. Get Used to Pressure
C. Speed Reading
D. Sing Songs
E. Learn Language in Chunks
How can you practice your oral English?
A. Go to classes
B. Join groups or activities with English-speakers
C. Find a conversation partner online
Do a language exchange
E. Go to English corner
There is an easy way to improve your oral English without any pressure.
A. 对
B. 错
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