下列不可用粗实线表示的是()A.外螺纹大径 B.可见内螺纹小径 C.不完整的螺纹收尾

题型:单项选择题

问题:

下列不可用粗实线表示的是()

A.外螺纹大径

B.可见内螺纹小径

C.不完整的螺纹收尾(螺尾)

D.螺纹终止线

考点:轮机工程标准件常用件标准件常用件题库
题型:单项选择题

如图所示是一种LED手电筒,它由5个LED并联组成,用两节干电池做电源,正常每只LED通过的电流为15mA,则它正常工作时的总电流为_________A,电池的输出功率为__________W。

题型:单项选择题

(2004年)某外商向律师咨询:“在中国已经参加的知识产权国际公约中,哪项国际公约的保护范围最广、保护水平最高、保护力度最大、制约力最强?”该律师的下列回答哪一个是正确的?

A.世界知识产权组织公约

B.保护工业产权巴黎公约

C.与贸易有关的知识产权协定

D.伯尔尼公约

题型:单项选择题

People are indulging in an illusion whenever they find themselves explaining at a cocktail(鸡尾酒) party, say, that they are "in computers," or "in telecommunications," or "in electronic funds transfer". The implication is that they are part of the high-tech world. Just between us, they usually aren’t. The researchers who made fundamental breakthroughs in those areas are in a high-tech business. The rest of us are () of their work. We use computers and other new technology components to develop our products or to organize our affairs. Because we go about this work in teams and projects and other tightly knit working groups(紧密联系在一起的工作小组), we are mostly in the human communication business. Our successes stem from good human interactions by all participants in the effort, and our failures stem from poor human interactions. The main reason we tend to focus on the () rather than the human side of the work is not because it’s more () , but because it’s easier to do. Getting the new disk drive installed is positively trivial compared to figuring out why Horace is in a blue funk(恐惧) or why Susan is dissatisfied with the company after only a few months. Human interactions are complicated and never very crisp(干脆的,干净利落的) and clean in their effects, but they matter more than any other aspect of the work. If you find yourself concentrating on the () rather than the (), you’re like the vaudeville character(杂耍人物) who loses his keys on a dark street and looks for them on the adjacent street because, as he explains, "The light is better there!".

not because it’s more ()

A.trivial

B.crucial

C.minor

D.insignificant

题型:单项选择题

从经济因素分析,企业进入当地专业化产业园区建厂的优越性。

题型:单项选择题

主肾虚、水饮、痰血证的是( )。

A.面部白色
B.面部黄色
C.面部赤色
D.面部青色
E.面部黑色

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