煤的灰分在>30%时,其测定的重复性是(),再现性是()。
A.0.10.3
B.0.30.5
C.0.50.7
D.0.70.9
参考答案:C
___________ work has been done to improve the people’s living standard.
A.Many
B.A great many
C.A great deal of
D.A large number of
基金管理人可按申购金额分段设置申购费率,场内赎回按份额持有时间分段设置赎回费率。( )