What is the purpose of preliminary work in a scientific investigation?
1 )
To confirm the expected results before presenting them
To practice measuring techniques and determine appropriate variables
3 )
To reduce the amount of time needed for the main investigation
4 )
To ensure the investigation produces the desired outcome
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...