A:若m∥α,n∥β,m⊥n,则α⊥β
B:若m∥n,n∥α,α∥β,则m∥β
C:α∥β,m⊥α,n∥β⇒m⊥n
D:若α⊥β,α∩β=n,m⊥n,则m⊥α
下列各组离子在pH=1的溶液中能大量共存的是( )
选项
物质
杂质
试剂
操作方法
A
H2SO4溶液
FeSO4
足量Fe粉
过滤
B
CO2
CO
足量氧气
点燃
C
NaCl溶液
Na2CO3
适量BaCl2溶液
D
CaO固体
CaCO3
足量的水
The Cartoon Museum
Come and see the best of British cartoon art. There is something for everyone—including popular cartoon characters and a great shop full of funny books and cards.
Price: £4.00
Opening times
Tuesday – Saturday 10:30-17:30
Sunday 12:00-18:00
Cox's Hotel
Tel: 01789 404600
E-mail:info@coxshotel.co.uk
Website: www.coxshotel.co.uk
Coffee shop: 9:00am-6:00pm
Tea room: 10:30am-5:30pm
Pub (酒吧): 12:00- midnight
(1:30am on Friday/Saturday
Stratford Butterfly(蝴蝶)Farm
Tel: 01789 299288 Price Opening Hours
E-mail: sales@butterflyfarm.co.uk £5.50 adult Summer 10am-6am