In() a single layer of abrasive grains is bonded with an adhesive to flexible or semirigid backings.
A: natural abrasives
B: conventional abrasives
C: superabrasives
D: coated abrasives
A: natural abrasives
B: conventional abrasives
C: superabrasives
D: coated abrasives
举一反三
- The word ______ in this passage suggests something less than original. A: assertive B: aggressive C: flexible D: conventional
- Natural gas vehicles have lower emissions compared with conventional cars running on diesel or gasoline．
- Coal, oil and natural gas are __________ and __________. A: clean ... recyclable B: renewable resource ... unconventional energy C: non-renewable resource ... conventional energy
- the trim with double-sided adhesive tape. A: Attach the trim with double-sided adhesive tape. B: Tie the trim with double-sided adhesive tape. C: Fix the trim with double-sided adhesive tape.
- Which one is the most common form of a feature article?（ ） A: inverted pyramid B: flexible and diverse structures C: the use of writing techniques D: all-encompassing with a single focus