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【单选题】
高负荷生物滤池具有( )的特点。A.
生物膜主要靠水力冲刷脱落,更新快
B.
滤池更容易堵塞
C.
滤料尺寸与普通生物滤池相当
D.
同时具备硝化与反硝化功能
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【简答题】我国的税款征收方式主要有（ ）。
【简答题】( ) 1 -How many ____ have you got on your farm? -I've got five. A. sheeps B. sheep C. pig ( ) 2 Some ___ came to our school for a visit that day. A. Germans B. Germen C. Germany ( ) 3 In the ...
【简答题】我国的税款征收方式主要有（ ）。
【单选题】根据以下内容回答题： As contrasts go，there are few other pairs of culture as distinct from each other as the Japa-nese and the Americans．Japan’s many centuries of history and especially its Buddhist heritage ha...
A.
most obvious
B.
slightest
C.
Same
D.
less suitable
【简答题】Work in pairs. There are many kinds of business organisations and various terms for them. Can you differentiate them? Read the chart below and match each type of business organisation with its corresp...
【简答题】我国的税款征收方式主要有（ ）。
【单选题】How many non-bonding pairs of electrons are there in a nitrogen molecule?
A.
0
B.
1
C.
2
D.
3
【简答题】Read the following pairs of thesis statements. Tick the one in each pair that you think is better. Discuss your answers with a partner. a. ............There are several advantages of owning a car, but...
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