1. A multimeter is used for measuring two or more electrical values — voltage (volts), current (amps) and resistance (ohms).
2. The cable tester is used for the verification of the electrical connections in a signal cable or other wired assembly.
3. A system diagnostic card is used to discover and report errors found in the motherboard of a computer.
4.The diagnostic software is used for identifying problems on a computer or piece of equipment. This software tests the onboard systems for malfunctioning and helps to alert users of potential problems or breakdowns.
Past Continuous, the Past Simple, the Present Perfect or the Present Perfect Continuous. 1. Greg (has returned) at last. Mary (has been waiting) for him so long. 2. Margaret, you (have been reading) my letters. Don’t deny it. 3. When I (came) home, Mother (was making) breakfast and Father (was having) his morning tea. 4. When did you (discuss) it? I have never (heard) the subject mentioned. 5. No, you can’t go to the Smiths’. You (have been) there twice this week. 6. Why, you (have not changed) at all. I (recognized) you the moment I (saw) you. 7. Has Terry (gone) shopping already? 8. When did you (go) to bed? 9. I (have offered) to buy them out. 10. My dear girl, you (have been overeating) for years. You (have lost) your looks; you (have lost) your figure. You can’t get back to normal overnight. Remember what doctor Lester (told) you on Monday. 11. I (saw) her when I (was driving) past their house on my way to work. 12. He (has not said) a single word to me yet and he (got) that letter on Sunday. 13. The children (have been talking) of nothing else for weeks. 14. And we (have sung) together ever since that time. 15. Where was he? – He (was sitting) at his desk. He (has not moved) since she (left).
1. A multimeter is used for measuring two or more electrical values — voltage (volts), current (amps) and resistance (ohms).
2. The cable tester is used for the verification of the electrical connections in a signal cable or other wired assembly.
3. A system diagnostic card is used to discover and report errors found in the motherboard of a computer.
4.The diagnostic software is used for identifying problems on a computer or piece of equipment. This software tests the onboard systems for malfunctioning and helps to alert users of potential problems or breakdowns.
1. Greg (has returned) at last. Mary (has been waiting) for him so long. 2. Margaret, you (have been reading) my letters. Don’t deny it. 3. When I (came) home, Mother (was making) breakfast and Father (was having) his morning tea. 4. When did you (discuss) it? I have never (heard) the subject mentioned. 5. No, you can’t go to the Smiths’. You (have been) there twice this week. 6. Why, you (have not changed) at all. I (recognized) you the moment I (saw) you. 7. Has Terry (gone) shopping already? 8. When did you (go) to bed? 9. I (have offered) to buy them out. 10. My dear girl, you (have been overeating) for years. You (have lost) your looks; you (have lost) your figure. You can’t get back to normal overnight. Remember what doctor Lester (told) you on Monday. 11. I (saw) her when I (was driving) past their house on my way to work. 12. He (has not said) a single word to me yet and he (got) that letter on Sunday. 13. The children (have been talking) of nothing else for weeks. 14. And we (have sung) together ever since that time. 15. Where was he? – He (was sitting) at his desk. He (has not moved) since she (left).