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【多选题】
代谢性酸中毒的代偿机制为A.
刺激呼吸中枢，经肺排出过多CO2，H2CO3浓度下降
B.
缓冲系统将强酸转化为弱酸，HCO3-被消耗，H2CO3增加
C.
Na2HPO4在强酸作用下，转化为NaH2PO4，经肾排出
D.
过多的酸以NH4+形式经肾排出
E.
重吸收NaHCO3增多，使HCO3-/H2CO3重新恢复至20：1
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举一反三
【单选题】— I wonder if I could take a few days off work. — ________ .
A.
I’m sure you could leave off work
B.
I should say a few days is no problem
C.
Why, what’s the matter with you
D.
No, you mustn’t go away
【单选题】——Could I use your English dictionary for a few moments? —— ________．I’m not using it myself.
A.
Come on
B.
It depends
C.
Go ahead
D.
That’s great
【单选题】— Can I take your order now? — ____. Could I have a few more minutes? [ ]
A.
No way
B.
Go ahead
C.
Not quite
D.
No good
【单选题】-- Could I use your computer for a few moments, please? --- ________. I’m not using it myself.
A.
Come on
B.
It depends
C.
Go ahead
D.
That’s great
【单选题】My father is so kind thak he is to all of my friends. [ ]
A.
friend
B.
friends
C.
friendly
D.
friendship
【单选题】----Could I use your computer for a few moments, please? -----______.I’m not using it myself.
A.
Go ahead
B.
Come on
C.
Take care
D.
Hold on
【简答题】— Could I use your computer for a few moments, please?—__________. I’m not using it myself. A．Come on B．It depends C．Go ahead D．That’s great
【简答题】句型转换（每空一词）。 1.1 want to borrow some money from my friends.(改为同义句) I hope my friends________ some money________ me. 2. Please buy some drinks and snacks for us.(改为否定句) Please________ ________ ________ ...
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