One of the difficulties of dealing with the United States is that the old non-metric measurements are still used in some industries. Here are some common abbreviations printed in bold type. What do they stand for？
1. 1 h.p.=746 watts
2. 1 U.S.gall.=3.785 litres[but 1 British （imperial） gall.=4.456 litres]
3. 1 yd.=0.9144 metres
4. 1 yd.=3 ft.
5. 1 in.=2.54 centimetres
6. 1 oz.=28.35 grams
7. 1 cwt.=45.359 kilograms
8. 2.205 lbs=1 kilogram
9. and， though not really a measurement， 1 doz. boxes=12 boxes
1. horsepower
2. gallon
3. yard
4. feet
5. inch
6. ounce
7. hundredweight
8. pounds
9. donzen
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