下列关于定向井井身轨迹设计和控制的描述，正确的有（）

For this part, you are asked to write a composition of ...

未知题型For this part, you are asked to write a composition of no less than 150 words on 'Why Pursue a Graduate Degree?' You can describe your reasons and motivations for pursuing a graduate degree in your chosen program of study. Remember to write clearly.

M13噬菌体每个世代裂解宿主后，可释放100个子代噬菌体A．正确 B．错误

不定项选择 M13噬菌体每个世代裂解宿主后，可释放100个子代噬菌体

Directions: You are allowed thirty minutes to write a c...

未知题型Directions: You are allowed thirty minutes to write a composition on the topic: The Importance of ConfidencE.You should base your composition on the following outline, and write coherently and neatly, in no less than 120 words.
Outline:
1．信心的重要性；
2．缺乏信心的原因；
3．树立信心的可能性。