核子密度仪一般用于路基路面压实度快速测定，但不宜作为仲裁试验。()
查看答案
用环刀法测得的密度是环刀内土样所在深度范围内的平均密度，它可以代表整个碾压层平均密度。()
A. 正确
B. 错误
The author mainly describes ______ in the article.
A. the creation of glaciers
B. the classification of glaciers
C. the features of glaciers
D. what glaciers are
A．Airlines have changed from seeking profits to government-owned companies.B．Airlines
Airlines have changed from seeking profits to government-owned companies.
B. Airlines have changed from government-owned to independent companies.
C. Airline companies have broken away from the country.
D. Airline companies have changed to all private-owned companies.
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