My car’s performance is ___ since the engine’s been tuned and the tires have been changed．

A．better as twice

B．twice as the condition

C．twice as good

D．twice as better

某省水利厅欲开发用于开采地下热水的地热井，携带有关资料到某省地质矿产厅申请办理有关地热井的采矿登记手续，地质矿产厅依法给予了采矿登记。该采矿登记属于何种行为 ( )

A．属于行政确认，因为采矿登记确认了采矿权

B．属于行政许可，因为该采矿登记是依法并依申请作出的，赋予了水利厅采矿权

C．属于行政内部审批，因为水利厅和地质矿产厅都属于行政机关

D．属于行政强制措施，因为采矿必须进行登记