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【单选题】
枕骨大疝病人呼吸衰竭时抢救措施首先是()A.
气管插管
B.
气管切开
C.
脱水降颅压
D.
明确脑疝的原因
E.
手术切除病灶
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举一反三
【单选题】You _____ if you had spoken the truth out. But you were as quiet as a mouse. [ ]
A.
mustn't have been blamed
B.
shouldn't be blamed
C.
wouldn't have been blamed
D.
couldn't be blamed
【单选题】If you had spoken clearly, you ______.
A.
would be understood
B.
could be understood
C.
would have been understood
D.
would have understood
【简答题】9-1 上面(5)、(6)求偏导数 5. 求下列函数的定义域: 9-2 求下列函数的偏导数:(5) 9.验证: 9-3 求下列函数的全微分:
【简答题】求下列函数的微分 (1) (2) (3)设y=y(x)满足方程xy-e x +e y =0，求dy
【单选题】If you had spoken clearly, you _______.
A.
would have been understood
B.
be understood
C.
can understand
D.
can be understood
【单选题】If you had spoken more clearly, you______.
A.
would understand
B.
would be understood
C.
would have been understood
D.
would have understood
【简答题】求下列函数的微分: (1) (2) (3) (4)
【单选题】298K 时,反应 Zn+Sn 4+ = Sn 2+ +Zn 2+ (1.0 mol·dm -3 ) 组装成原电池,测得电动势为 0 ,则 c(Sn 2+ ) 应为( ) mol·dm -3 。(已知 j Θ (Zn 2+ /Zn) = -0.76V , j Θ (Sn 4+ /Sn 2+ ) = 0.15V )
A.
1.0
B.
4.25×10 -16
C.
1.81×10 -31
D.
0.86
【单选题】298K时，反应Zn+Sn4+= Sn2+(1.0mol·dm-3)+Zn2+(1.0mol·dm-3)组装成原电池，测得电动势为0，则c(Sn4+)应为（）mol·dm-3（已知jϴ(Zn2+/Zn) = -0.76V，jϴ(Sn4+/Sn2+) = 0.15V）
A.
1.0
B.
4.25×10 -16
C.
1.81×10 -31
D.
0.86
【单选题】If you had spoken clearly, you would ______ .
A.
understand it
B.
have understood
C.
be understood
D.
have been understood
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