舵回路的硬反馈信号是().A.位置信号 B.力信号 C.速度信号 D.加速度信号

题型:单项选择题

问题:

舵回路的硬反馈信号是().

A.位置信号

B.力信号

C.速度信号

D.加速度信号

考点:民用航空器维修执照考试M11涡轮发动机飞机的结构与系统M11涡轮发动机飞机的结构与系统题库
题型:单项选择题

债券当期收益率的计算公式是( )。

A.票面收益/市场价格

B.票面收益/债券面值

C.(出售价格-购买价格)/市场价格

D.(出售价格-购买价格)/债券面值

题型:单项选择题

当个人把自身的感觉性需要通过行动来表达和展现时,其反应是()。

A.表达性需要

B.感觉性需要

C.比较性需要

D.规范性需求

题型:单项选择题

海关的隶属关系不受行政区划的限制。海关设立在对外开放的口岸和海关监管业务集中的地点。( )

题型:单项选择题

A deal is a deal—except, apparently, when Entergy is involved. The company, a major energy supplier in New England, provoked justified outrage in Vermont last week when it announced it was reneging on a longstanding commitment to abide by the state’s strict nuclear regulations.

Instead, the company has done precisely what it had long promised it would not challenge the constitutionality of Vermont’s rules in the federal court, as part of a desperate effort to keep its Vermont Yankee nuclear power plant running. It’s a stunning move.

The conflict has been surfacing since 2002, when the corporation bought Vermont’s only nuclear power plant, an aging reactor in Vernon. As a condition of receiving state approval for the sale, the company agreed to seek permission from state regulators to operate past 2012. In 2006, the state went a step further, requiring that any extension of the plant’s license be subject to Vermont legislature’s approval. Then, too, the company went along.

Either Entergy never really intended to live by those commitments, or it simply didn’t foresee what would happen next. A string of accidents, including the partial collapse of a cooling tower in 207 and the discovery of an underground pipe system leakage, raised serious questions about both Vermont Yankee’s safety and Entergy’s management—especially after the company made misleading statements about the pipe. Enraged by Entergy’s behavior, the Vermont Senate voted 26 to 4 last year against allowing an extension.

Now the company is suddenly claiming that the 2002 agreement is invalid because of the 2006 legislation, and that only the federal government has regulatory power over nuclear issues. The legal issues in the case are obscure: whereas the Supreme Court has ruled that states do have some regulatory authority over nuclear power, legal scholars say that Vermont case will offer a precedent-setting test of how far those powers extend. Certainly, there are valid concerns about the patchwork regulations that could result if every state sets its own rules. But had Entergy kept its word, that debate would be beside the point.

The company seems to have concluded that its reputation in Vermont is already so damaged that it has noting left to lose by going to war with the state. But there should be consequences. Permission to run a nuclear plant is a public trust. Entergy runs 11 other reactors in the United States, including Pilgrim Nuclear station in Plymouth. Pledging to run Pilgrim safely, the company has applied for federal permission to keep it open for another 20 years. But as the Nuclear Regulatory Commission (NRC) reviews the company’s application, it should keep in mind what promises from Entergy are worth.

It can be inferred from the last paragraph that()

A. Entergy’s business elsewhere might be affected

B. the authority of the NRC will be defied

C. Entergy will withdraw its Plymouth application

D. Vermont’s reputation might be damaged

题型:单项选择题

若发现精密坐标镗床工作1h后,主轴套筒垂直移动时有卡紧现象时,可以从()着手排除。

A.改善润滑条件

B.更换新的润滑油

C.增加冷却效果

D.采用强制冷的冷却液切削

E.重新调整主轴套筒与主轴箱孔的间隙

F.减少切削用量和切削力

更多题库