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【单选题】
D 触发器触发脉冲输入端 CP 为上升沿时刻,且 D=0 , Q n =1 ,则 Q n +1 = 。A.
0
B.
1
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举一反三
【简答题】菊花适宜储藏在( )温度中。
【单选题】听力原文： [27]The incident took place last November in the Iraqi town of Haditha. It was first reported several months later, and a preliminary military investigation in February recommended that a formal...
A.
In last October.
B.
In last December.
C.
In February.
D.
In last November.
【单选题】Prices began to climb noticeably last year , ___ __ a historical high in November. [ ]
A.
hit
B.
to hit
C.
hitting
D.
being hit
【单选题】I know that Thanksgiving Day ____ on the last Thursday of November. Could you tell me how you usually ______ it in your country? [ ]
A.
rests; congratulate
B.
places; remind
C.
bids; remember
D.
falls; observe
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