根据我国献血法，每人每年献血不超过2次，如果每个献血者每年献血2次（每次按献血一个单

国务院办公厅下发《关于进一步加强森林防火工作的通知》要求对执行预防和扑救森林火灾任务的各种森林消防车辆，免征（），对森林防火专用电台免收无线电通讯频率占用费。

A.车辆购臵税

B.养路费

C.车辆通行费

D.保养费

According to the passage, which of the following did NOT happen in the room where the college entrance exam was going on

A．The teachers in the exam hall tried to stop the police from entering into the room.

B．Some examinees sent answers with mobile phones to people outside the room to make profits.

C．The mobile phones were confiscated by the police.

D．Some examinees forwarded answers to people who have paid a lot of money.

下图是甲、乙两物质的溶解度曲线图，下列说法正确的是

A、t₁℃时，甲、乙两物质的溶解度相等

B、温度对甲、乙两物质的溶解度影响相同

C、把t₁℃时甲、乙两饱和溶液升温至t₂℃时，两溶液仍都为饱和溶液

D、把t₂℃时甲、乙两饱和溶液降温至t₁℃时，两溶液都析出溶质

1，2，3，7，16，( )

A．66
B．65
C．64
D．63

主帐号进入橱窗管理页面有哪几种方式？（）

A.数据管家

B.建站管理

C.外贸直通车营销中心

D.产品管理