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【单选题】
— Susan, go and join your sister cleaning the yard. — Why _____? John is sitting there doing nothing. [ ]
A.
him
B.
he
C.
I
D.
me
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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
查看完整题目与答案
【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
查看完整题目与答案
【单选题】298K 时 , 反应 Zn+Sn 4 + (1.0 mol·dm -3 ) = 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.
0.86
C.
4.25×10 -16
D.
1.81×10 -31
查看完整题目与答案
【判断题】在气动弹性设计准则中,设计飞行设计速度vd要大于等于最大飞行速度vmax,在设计准则中,vd等于vmax的1.5倍。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If you had spoken clearly, you _______.
A.
would have been understood
B.
be understood
C.
can understand
D.
can be understood
查看完整题目与答案
【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
查看完整题目与答案
【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
查看完整题目与答案
【判断题】在气动弹性设计准则中,设计飞行设计速度 Vd 要大于等于最大飞行速度 Vmax,在有些规范中,Vd 等于 Vmax 的1.15倍。
A.
正确
B.
错误
查看完整题目与答案
【单选题】298K 时,反应 Zn+Sn 4+ (1.0 mol·dm -3 ) =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 ψ Θ (Zn 2+ /Zn) = -0.76V, ψ Θ (Sn 4+ /Sn 2+ ) = 0.15V)
A.
1.0
B.
4.25×10 -16
C.
1.81×10 -31
D.
0.86
查看完整题目与答案
【判断题】在气动弹性设计准则中,设计飞行设计速度vd要大于等于最大飞行速度vmax,在有些规范中,vd等于vmax的1.15倍。
A.
正确
B.
错误
查看完整题目与答案
相关题目:
【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
查看完整题目与答案
【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
查看完整题目与答案
【单选题】298K 时 , 反应 Zn+Sn 4 + (1.0 mol·dm -3 ) = 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.
0.86
C.
4.25×10 -16
D.
1.81×10 -31
查看完整题目与答案
【判断题】在气动弹性设计准则中,设计飞行设计速度vd要大于等于最大飞行速度vmax,在设计准则中,vd等于vmax的1.5倍。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If you had spoken clearly, you _______.
A.
would have been understood
B.
be understood
C.
can understand
D.
can be understood
查看完整题目与答案
【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
查看完整题目与答案
【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
查看完整题目与答案
【判断题】在气动弹性设计准则中,设计飞行设计速度 Vd 要大于等于最大飞行速度 Vmax,在有些规范中,Vd 等于 Vmax 的1.15倍。
A.
正确
B.
错误
查看完整题目与答案
【单选题】298K 时,反应 Zn+Sn 4+ (1.0 mol·dm -3 ) =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 ψ Θ (Zn 2+ /Zn) = -0.76V, ψ Θ (Sn 4+ /Sn 2+ ) = 0.15V)
A.
1.0
B.
4.25×10 -16
C.
1.81×10 -31
D.
0.86
查看完整题目与答案
【判断题】在气动弹性设计准则中,设计飞行设计速度vd要大于等于最大飞行速度vmax,在有些规范中,vd等于vmax的1.15倍。
A.
正确
B.
错误
查看完整题目与答案