Exercise 4， Unit 3
举一反三
- Unit 3 listening Part Exercise 5 请把原题选择题的答案 填写到下面空格中。
- Propulsion control systems are generally composed of .1) Remote control device；2) telegraph system；3) Logical control unit；4) Speed and load control unit；5) Safety protection unit；6) Main engine pneumatic control system A: 1) 2) 3) 4) 5) 6) B: 1) 2) 3) 4) 5) C: 1) 2) 3) 6) D: 2) 3) 4) 5) 6)
- If fitness is the goal of exercise, the average person's exercise frequency should be more than ( ) times a week. A: 2 B: 3 C: 4 D: 5
- Unit 4 单词连线(副本) Unit 4 Matching单词连线
- 对组件进行测试，以确认其操作没有问题。 A: Do a test of the unit to make sure that there is no problem with its operation. B: Do a test of the unit to establish its operation. C: Do a test of the unit to exercise its operation. D: Test the unit, if you fear that there is a problem with its operation.