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【单选题】
关于碱性溶液下列叙述正确的是
A.
只有OH - 存在
B.
pH≥7
C.
[H + ] >[OH ­- ]
D.
[OH - ]>[H + ]
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【单选题】In a small-signal transistor, the typical range of the parameter α is ( ).
A.
greater than 1
B.
between 0 and 1
C.
almost equal to 1 but always less than 1 (0.9 to 1.0)
D.
almost equal to 1 but always greater than 1 (1.0 to 1.1)
【单选题】Which of the following is a typical operating voltage range for short transmission lines.
A.
Less than 456 kV
B.
Less than 132 kV
C.
Less than 33 kV
D.
Less than 100 kV
【简答题】Section A: Fill in the blanks with the words given below. Change the form where necessary.(nowadays data vital typical occupy throughout production afterwards) ...
【判断题】制作逐帧动画需要为动画的每一幅画面进行创作
A.
正确
B.
错误
【判断题】信息化战争目的是攻城掠地、全部歼灭敌军。
A.
正确
B.
错误
【简答题】The typical range of proposed penalties for serious violations, before adjustment factors are applied, will be $1,500 to $5,000, although the Regional Administrator may propose up to $7,000 for ( ) wh...
【判断题】System2, which understands language, has access to norms of categories, which specify the range of plausible values as well as the most typical cases.
A.
正确
B.
错误
【单选题】What is considered the typical spectral range of visible light for most humans ? ( )
A.
300-800 nm
B.
380-770 nm
C.
400-800 nm
D.
250- 920nm
【简答题】视译: The typical secondary school is the co-educational comprehensive or multi-purpose high school, offering a wide range of subjects.
【单选题】In a small-signal transistor, the typical range of the parameter β is ( ).
A.
greater than 100
B.
between 0 and 100
C.
almost equal to 100 but always less than 100 (90 to 100)
D.
large and in the range of about 50 to 400
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