Trains usually have two to convert currents.
A: coolingfans
B: rectifiers
A: coolingfans
B: rectifiers
B
举一反三
- Trains usually have two ________ to convert currents. A: cooling fans B: locomotives C: circuit breakers D: rectifiers
- Trains usually have two ________ to convert currents. A: cooling fans B: locomotives C: circuit breakers D: ectifiers
- Two trains ______ head-on in Ohio early this morning. (U2—B)
- Usually, a student card (able) ______ me to travel half-price(半价) on trains in China.
- In Britain, universities usually have __________. A: two terms B: three terms C: less terms than those in America D: no holidays
内容
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Which of the following statements is true（）. A: There is a strike across the country. B: Many trains have been cancelled. C: A few trains have been cancelled. D: There is a strike in the North Region.
- 1
Electric trains have now ________ steam trains in our country. A: taken the place of B: given place to C: changed places with D: taken their place of
- 2
A good salesman is usually an __________, who likes tonetwork with people. A: invert B: convert C: introvert D: extrovert
- 3
Maglev trains have many advantages. They are fast, safe, and environmentally friendly.
- 4
______ of the students in our class ______ money for the disabled child.（） A: Two three; have raised B: Two third; have raised C: Two thirds; have raised D: Two thirds; has raised