在一般网络可靠性模型中,用一定函数式来表示部件的两态对系统两态的影响,这个函数式称为

题型:单项选择题

问题:

在一般网络可靠性模型中,用一定函数式来表示部件的两态对系统两态的影响,这个函数式称为()。

A.函数

B.态函数

C.网络函数

D.结构函数

考点:质量工程师可靠性的基本概念及常用度量可靠性的基本概念及常用度量题库
题型:单项选择题

将一个棱长40厘米的正方体木料加工成一个最大的圆柱体,这块正方体木料的利用率是______.

题型:单项选择题

根据对话内容,从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。(共5分)

—Mary,we are going to have a party on New Year’s Eve. I’m sure we’ ll have a good time. ____小题1:___

—I’ d like to. ___小题2:___

—In our classroom. We are going to decorate it and turn it into a splendid ballroom.

—___小题3:___ I shall be very glad to spend my first New Year in China with you.

—But we are going to ask everyone at the party to give a performance. ___小题4:___

—I will. My voice is not very pleasant to the ear,though.

—I heard you sing once. ____小题5:__ I’ m sure you’ll be the star of our New Year party.

—Oh,thank you.

A.Your voice was sweet and beautiful.

B.Where are you going to have it?

C.Would you like to join us?

D.Thank you for inviting me.E. Oh, it is great.

F. Let’s go to the ball together.

G. Do sing us some English songs,please.

题型:单项选择题

尿蛋白定性为(+++),表示()

A.混浊

B.微混浊

C.絮状混浊

D.块状混浊

E.颗粒状混浊

题型:单项选择题

清点手术物品在()

A.手术开始前

B.手术开始后

C.关体腔前

D.关体腔后

E.手术结束后

题型:单项选择题

茶树繁殖的两种方法是什么?各有哪些特点?

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