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【单选题】
在Matlab中求【图片】极限的命令是（ ）A.
syms x; limit(‘(tanx-sinx)/sin2x^3’,x,0)
B.
syms x; limit(‘(tanx-sinx)/(sin2x)^3’,x,0)
C.
syms x; limit(‘(tan(x)-sin(x))/(sin(2*x))^3’,x,0)
D.
syms x; limit(‘(tan(x)-sin(x))/(sin2x)^3’,x,0)
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反馈参考答案：
举一反三
【简答题】An acid reacts with a base to produce a salt and water. Hydrogen from the acid combines with ( ) from the base to form water molecules.
【简答题】An acid reacts with a base to produce a ( ) and water. Hydrogen from the acid combines with hydroxide from the base to form water molecules.
【单选题】—I don't feel like going out. Why don't we watch TV at home? — ______ You promised to take me out for dinner.
A.
Come on!
B.
Really?
C.
Not at all.
D.
Why not?
【单选题】下列因素中，不会引起甲状腺大部切除术后呼吸困难和窒息的是
A.
手术创伤的应激诱发危象
B.
切口内出血压迫气管
C.
气管软化塌陷
D.
喉头水肿
E.
喉返神经损伤两侧声带麻痹
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