This book is a collection of practical transistor circuits, ____ has been tested by the author in his own laboratory.
each of which
举一反三
- You can't use the machine because it ___ yet. A: has not tested B: has not been test C: has not been tested
- You can’t use the machine because it __________________ (not test) yet. A: has not been tested B: was tested C: has tested
- The author __________ the first chapter of his book ___________ by giving a brief account of the advances science has made since liberation.
- His book has been taken out of ______. A: circulation B: circuit C: circumference D: circumstance
- His collection of paintings has been put _____in<br/>many museums. A: on display B: on visit C: in display D: in visit
内容
- 0
The author brings the first chapter of his book ____ by giving a brief account of the advances science has made since liberation.
- 1
This is the material ______ in the laboratory last week. A: to be tested B: B. testing C: being tested D: D. tested
- 2
The transmission of 3.6 Tbit/s signal on 120km fiber lines has been successfully achieved in the laboratory.
- 3
As far as I see, this book has its own _______．
- 4
Why is the man concerned A: The launch has been delayed. B: The trial is not finished. C: The item has not been tested yet. D: The product might be unpopular.