个人抵押贷款房屋保险的适用对象是以房屋作抵押向（）申请贷款购房的具有完全民事行为能力

Would you please help me move the piano?________

A．You’re welcome.

B．It’s a pleasure.

C．With pleasure.

D．Don’t mention it.

-–Do you think that we should make preparations for the competition in advance?

-–Exactly. ______.

A．Actions speak louder than words

B．Fight no battle unprepared

C．Better late than never

D．A good beginning is half done

下列物质中，能用作氮肥的是[ ]

A．NH₄HCO₃

B．K₂SO₄

C．K₂CO₃

D．Ca(H₂PO₄)₂

一桶油连桶重32.1千克，倒出一半油后连桶重还有17.1千克，原来这桶油有多少千克？

大气中，在太阳光和热的作用下，VOC与氧化氮，形成（）。