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【判断题】
程序并发执行时具有间断性特征。
A.
正确
B.
错误
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【单选题】— Linda has changed a lot! She's so quiet! — You're right. She _____ noisy. [     ]
A.
uses to be
B.
used to be
C.
uses to being
D.
used to being
【单选题】在电容滤波的桥式整流电路中,若变压器二次侧电压为 ,则整流输出电压的平均值为( )。
A.
1.2U
B.
0.9U
C.
0.45U
D.
U
【简答题】翻译下面句子: H o w e v e r , another idea has been widespread among m a them a ticians a t least since the time of the ancient Greeks, and its st a tement d a tes back to Pl a t o , w hose di f f erent vie...
【判断题】消费者均衡就是消费者获得了最大边际效用。
A.
正确
B.
错误
【单选题】在有电容滤波的单相桥式整流电路中,若要保证输出电压为45V,则变压器二次电压有效值应为( )。
A.
37.5V
B.
45V
C.
50V
D.
100V
【单选题】在有电容滤波的单相桥式整流电路中,若要保证输出电压为45V,则变压器二次电压有效值应为()V。
A.
37.5
B.
45
C.
50
D.
100
【单选题】The room was so quiet that she could hear the____of her heart.
A.
hitting
B.
beating
C.
hurting
D.
striking
【单选题】Tina isn’t so quiet as she . She is much more outgoing now.
A.
did
B.
used to
C.
was used to
D.
used to be
【单选题】I’m quiet, but Laura likes talking with people. So she is _______ than me.
A.
outgoing
B.
more outgoing
C.
outgoinger
D.
the most outgoing
【单选题】Kate is _____ quiet. She is so shy. [     ]
A.
very
B.
even
C.
more
D.
little
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