11.   Local officials say the fees go toward specific beach expenses such as police protection, trash removal and equipment maintenance.

12.   --Many departments do not keep complete equipment maintenance and training records.

13.   The Russians marveled at the amount of equipment American maintenance crews have for their airplanes.

n. + maintenance >>共 157
aircraft 12.25%
road 6.37%
equipment 3.19%
vehicle 2.94%
car 2.94%
ground 2.70%
refinery 2.45%
price 1.96%
park 1.96%
airplane 1.72%
equipment + n. >>共 370
maker 20.09%
company 9.04%
manufacturer 6.91%
manager 3.44%
supplier 3.19%
failure 3.15%
business 2.66%
problem 2.33%
sale 1.88%
industry 1.60%
maintenance 0.53%
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