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【单选题】
甲乙两艘船驶向一个不能同时停泊两艘船的码头,它们在一昼夜内到达的时间是等可能的。如果甲船的停泊时间是一小时,乙船的停泊时间是两小时,求它们中任何一艘都不需要等候码头空出的概率是多少?
A.
$\frac{1009}{1152}$
B.
$\frac{1011}{1152}$
C.
$\frac{1013}{1152}$
D.
$\frac{1015}{1152}$
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三
CbTC是基于( )的信号系统。
A.
信号电路
B.
通信
C.
轨道电路
D.
交流电路
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