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【多选题】
化学调节是通过动脉血或脑脊液中哪些物质浓度变化对呼吸频率和深度进行调节的（）A.
CO 2
B.
H +
C.
K +
D.
HCO 3 -
E.
O 2
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反馈参考答案：
举一反三
【单选题】Miss Wu has taught in this school ______.
A.
for ten years
B.
ten years ago
C.
since ten years
D.
for ten years ago
【单选题】下列关于会计要素的表述中,不正确的是
A.
会计要读是对会计对象的基本分类
B.
收入、成本和利润构成利润表的基本框架
C.
资产、负债和所有者权益称为静态会计要素
D.
会计要素是对会计核算对象的具体化
【单选题】How does Miss Wu deal with the audited courses?A．She has to attend the course only.
A.
How does Miss Wu deal with the audited courses? A．She has to attend the course only.
B.
She has to do the papers.
C.
She has to take part in the exam.
D.
She has to finish her homework.
【简答题】The concentration of H 2 S in a saturated aqueous solution at room temperature is approximately 0.10mol·L -1 . Calculated c(H 3 O + )，c(HS - )，and c(S 2- )in the solution.
【单选题】Miss Jones once _____ music at Bardon School for years and now is an actress. [ ]
A.
has taught
B.
taught
C.
had taught
D.
teaches
【单选题】下列关于会计要素的表述，不正确的是（）。
A.
会计要素是对会计对象的基本分类
B.
资产、负债和所有者权益反映企业的财务状况
C.
资产、负债和所有者权益称为静态会计要素
D.
收入、成本和利润三个要素，在利润表中列示
【单选题】Miss Gao _____ this school since 1996. [ ]
A.
has come to
B.
came to
C.
has taught
D.
has been in
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