用手握住瓶子,使瓶子在竖直方向静止,如果握瓶子的力加倍,则手对瓶子的摩擦力( )

题型:选择题

问题:

用手握住瓶子,使瓶子在竖直方向静止,如果握瓶子的力加倍,则手对瓶子的摩擦力(  )

A.大小不变

B.大小加倍

C.方向向上

D.方向由向上变为向下

考点:静摩擦力
题型:选择题

在编制建设工程设计概算时,对于拟建工程初步设计与已完工程或在建工程的设计相类似且没有可用的概算指标,但必须对建筑结构差异和价差进行调整的情况,可以采用的编制方法是()。

A.单位工程指标法

B.概算指标法

C.概算定额法

D.类似工程概算法

题型:选择题

Mr. and Mrs. Smith always spent their holiday in London in the past, staying in a small inn at the foot of a hill. One year, however, Mr. Smith made a lot of money in his business, so they decided to go to New York and stay at a really good hotel while they went touring around that famous city.
They flew to New York and arrived at their hotel late one evening. They expected that they would have to go to bed hungry, because in that small inn in London, no meals were served after seven. They were therefore surprised when the man who received them in the hall asked whether they would take dinner there that night.
"Are you still serving dinner" asked Mr. Smith.
"Yes, certainly, sir," answered the man. "We serve it until haft past nine."
"What are the meals then" asked Mr. Smith.
"Well, sir," answered the man, "We serve breakfast from seven to half past eleven in the morning, lunch from twelve to three in the afternoon, tea from four to five. And dinner from six to half past nine."
"But that hardly leaves any time for us to see the sights of New York," said Mrs. Smith.

Mr. and Mrs. Smith ______ in the past.
[A] had often stayed in a big hotel in London
[B] had traveled to many places
[C] often stayed in a small inn

题型:选择题

原型法的实现可借助于许多工具,( )为原型化的工具。屏幕生成器能够描述屏幕的交互机制,自动完成输入编辑,如数据检查、表格检查等。

A.集成数据字典

B.屏幕生成器

C.原型开发工作台

D.非过程报告书写器

题型:选择题

在监管评级中,对公司治理决策机制的评价内容应包括()

A.股东资格是否符合有关规定

B.股东大会能否按照章程的规定有效发挥其职能

C.董事会的结构是否合理

D.董事是否具备履行职责所必需的专业素质,是否勤勉诚信

E.董事会及其下设委员会能否按照章程的规定履行职责并发挥决策和监督作用

题型:选择题

对提升钢丝绳进行检查时,应遵守哪些规定?

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