Update and measure those are the only understand answers
Answer:
There are different phases of railroad expansion with the innovations in technology.
Explanation:
Few of the technological innovations are described below that leads in railroad expansion more rapid.
1. Centralized Traffic control (CTC) is introduced in 1960's that is used to control the traffic on railroads using different signal control.
2. In 1990's after computer technology involvement, railway ticket and reservation system is automate and being centralized. That makes the railroad expansion improve.
3. Bullet train technology has been introduced, that makes the railway trains more faster.
4. Electric trains has been introduced to use green energy and reduce the dependency on the fuel to make environment clean and green.
B- find and replace can replace any word in the document with another.
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When drilling, students in a study session use flashcards to quiz one another. thus, Option B is the correct statement.
<h3>
What do you mean by drill and practice?</h3>
The term drill and practice can be described as a way of practice characterized by systematic repetition of concepts, examples, and exercise problems.
Drill and exercise is a disciplined and repetitious exercise, used as an average of coaching and perfecting an ability or procedure.
Thus, When drilling, students in a study session use flashcards to quiz one another. Option B is the correct statement.
Learn more about drill and practice:
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