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【简答题】
每10分钟内电话交换台收到呼唤的次数X是一个离散型随机变量,它服从参数为λ(λ>0)的泊松分布,已知每10分钟收到3次呼唤与收到4次呼唤的可能性相同,求: (1)平均每10分钟内电话交换台收到呼唤的次数; (2)任意10分钟内电话交换台收到2次呼唤的概率。
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【单选题】关于下面程序,( )的结论是正确的。 public class J_Test { public static void main(String[] args) { try { return; } finally { System.out.println("1"); } } }
A.
上面程序含有编译错误
B.
上面程序会正常运行,但不产生任何输出
C.
上面程序在运行时会产生一个运行时异常
D.
上面程序输出“1”
【单选题】I think football is _____ older than basketball . [     ]
A.
little
B.
a little
C.
few
D.
a few
【单选题】I think football is _______ basketball in America.
A.
as popular as
B.
less popular
【简答题】I think football is ___(erous) than tennis.
【单选题】气管向健侧移位见于
A.
大量胸腔积液
B.
大叶性肺炎
C.
肺气肿
D.
肺不张
E.
支气管肺炎
【单选题】I think football is ________ than basketball in America.
A.
more popular
B.
so popular as
C.
as popular as
D.
less popular
【简答题】I think football is (good) ________ than basketball .
【单选题】气管向健侧移位见于
A.
一侧肺纤维化
B.
一侧胸腔积液
C.
一侧肋骨骨折
D.
肺气肿
E.
一侧甲状腺肿大
【单选题】I think football is ___basketball in America.
A.
more popular
B.
so popular as
C.
as popular as
D.
less popular
【多选题】气管向健侧移位见于
A.
一侧大量胸腔积液
B.
肺不张
C.
一侧气胸
D.
一侧甲状腺肿大
E.
纵隔肿瘤
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