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【简答题】
用四2输入与非门74LS00实现F=A+B的逻辑功能，请画出连线图。74LS00的外部引线排如图所示。
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Mary doesn’t want to work right away because she thinks that if she ____ a job she probably wouldn’t be able to see her boy friends very often.
A.
has to get
B.
had got
C.
were to get
D.
could have got
【简答题】如果从不包括大小王的52张扑克牌中随机抽取一张，那么取到红心（事件A）的概率是 ，取到方块（事件B）的概率是 ，问： （1）取到红色牌（事件C）的概率是多少？ （2）取到黑色牌（事件D）的概率是多少？
【单选题】如果从不包括大小王的52张扑克牌中随机抽取一张,那 么 取到红心(事件A)的概率是1/4,取到方块(事件 B)的概率是1/4。问: (1)取到红色牌(事件C)的概率是多少? (2)取到黑色牌(事件D)的概率是多少?
A.
1/4；1/2
B.
1/2；1/2
C.
1/2；1/4
D.
1/4；1/4
【简答题】如果从不包括大小王的52张扑克牌中随机抽取一张，那么取到红心的概率是 ，取到方片的概率是 ，则取到黑色牌的概率是 ．
【简答题】Mary: John, I heard you have been keeping (1) ___________________ for many years. I feel like getting a pet, but I’m not sure which animal would be suitable. Could you give me (2) ___________________?...
【单选题】Mary doesn’t want to work right away because she thinks that if she ____ a job she probably wouldn’t be able to see her boy friends very often.
A.
has to get
B.
had got
C.
were to get
D.
could have got
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