紧固在护圈内的螺母或螺栓,其上端平面必须超过护圈高度,以便螺母或螺栓的松、紧。()

题型:判断题

问题:

紧固在护圈内的螺母或螺栓,其上端平面必须超过护圈高度,以便螺母或螺栓的松、紧。()

考点:综采维修电工综采维修电工(综合练习)综采维修电工(综合练习)题库
题型:判断题

下列()不属于零星抹灰项目。

A.门窗套

B.栏杆

C.扶手

D.挑沿

题型:判断题

吸气性呼吸困难最常见()。

A.肺不张

B.气管异物

C.支气管哮喘

D.慢性支气管炎

E.肺炎球菌肺炎

题型:判断题

确定转子轴向位置是要求每级叶轮出口与()对中。

A.弯道入口

B.回流器入口

C.扩压器入口

D.蜗壳

题型:判断题

Like many of my generation, I have a weakness for hero worship. At some point, however, we all to question our heroes and our need for them. This leads us to ask: What is a hero

Despite immense differences in cultures, heroes around the world generally share a number of characteristics that instruct and inspire people.

A hero does something worth talking about. A hero has a story of adventure to tell and community who will listen. But a hero goes beyond mere fame.

Heroes serve powers or principles larger than themselves. Like high-voltage transformers, heroes take the energy of higher powers and step it down so that it can be used by ordinary people.

The hero lives a life worthy of imitation. Those who imitate a genuine hero experience life with new depth, enthusiasm, and meaning. A sure test for would-be heroes is what or whom do they serve What are they willing to live and die for The answer or evidence suggests they serve only their own fame, they may be famous persons but not heroes. Madonna and Michael Jackson are famous, but who would claim that their fans find life more abundant

Heroes are catalysts (催化剂) for change. They have a vision from the mountaintop. They have the skill and the charm to move the masses. They create new possibilities. Without Gandhi, India might still be part of the British Empire. Without Rosa Parks and Martin Luther King, Jr., we might still have segregated (隔离的) buses, restaurants, and parks. It may be possible for largescale change to occur without leaders with magnetic personalities, but the pace of change would be slow, the vision uncertain, and the committee meetings endless.

According to the passage, heroes are compared to high-voltage transformers in that ().

A. they have a vision from the mountaintop

B. they have warm feelings and emotions

C. they can serve as concrete examples of noble principles

D. they can make people feel per and more confident

题型:判断题

Which of the following statements is TRUE regarding crane operations().

A.Radio communications allow the crane operator to disregard the use of hand signals

B.The crane operators and signalman must be familiar with the correct hand signals

C.The forward cranes can be operated from the bridge

D.The aft cranes can be operated from the aft steering station

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