一辆汽车5小时行300千米,每分钟行______米,每小时行全程的______.

题型:解答题

问题:

一辆汽车5小时行300千米,每分钟行______米,每小时行全程的______.

考点:整数,小数,分数,百分数和比例的复合应用题
题型:解答题

图5-78所示两单元体的应力状态,关于它们的主应力大小和方向的论述只有哪项是正确的()。

A.主应力大小和方向均相同

B.主应力大小和方向均不同

C.主应力大小不同,但方向相同

D.主应力大小相同,但方向不同

题型:解答题

澄清的石灰水,遇到哪种物质会变浑浊[ ]

A.二氧化碳

B.水蒸气

C.空气

D.氧气

题型:解答题

激光干涉仪不仅用于精密测量,还可用于大型机床的精密定位。

题型:解答题

完成句子

1 .Only when you learn to respect others ,______________( 别人会尊重你) .(respect)

2 .Had I followed your advice to take with my umbrella ,I ________________( 就不会淋雨) ,so now

I am running a high fever.(catch)

3 .________________( 他们过着多么艰辛的生活) before they became famous !(What)

4 .________________( 他被选中)as an actor in the film made the family delighted.(choose)

5 .Not ________________( 收到他的邀请) ,I didn't go to his wedding party.(receive)

6 .Since the beginning of the vacation ,I ______________( 旅游)across the country ,and my next stop

is Mount Tai.(travel)

7 .The international agreement ,________________( 计划)to encourage children not to smoke and

help people kick the habit ,was signed yesterday.(intend)

8 .If your order is ready ,the T -shirt ________________( 送达你处)as soon as possible.(deliver)

9 .Professor Smith ,along with his assistants ,____________________( 研究这个项目)day and night

to meet the deadline.(work)

10 .Such poets as Shakespeare are widely read ,of whose works ,however ,some ________________

( 难以理解) .(understand)

题型:解答题

在使用UML建模时,若需要描述跨多个用例的单个对象的行为,使用______是最为合适的。

A.协作图(collaboration Diagram)
B.序列图(Sequence Diagram)
C.活动图(Activity Diagram)
D.状态图(Statechart Diagram)

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