Why is it desirable to operate paralleled AC generators at the same power factor?（）

相似题目

• Why is full-duplex Ethernet superior to its single-duplex counterpart?（）

  A . It uses inexpensive hubs B . It operates without collisions C . It operates on switches D . It provides faster data transfer E . It utilizes fewer wiring pair

  查看最佳答案

• Sometimes it is desirable to connect a member both by riveting and welding. Which statement is TRUE concerning this procedure? （）

  A . Tearing through the member is more likely in this type connection B . The weld may be broken by the stresses caused by riveting C . The weld increases the tensile stress on the rivet heads D . The welding must be completed before the riveting commence

  查看最佳答案

• Before shutting off the fuel supply to stop a medium or high–speed diesel engine, why is it necessary to allow the engine to idle for a few minutes?（）

  A . To prevent internal damage form local overheating B . To ensure the fuel nozzles are flushed clean C . To clear the smoke stack D . To let the waste heat boiler reduce its rate of steam generatio

  查看最佳答案

• Why is it appropriate to use conditional label advertising when deploying MPLS? （）

  A . to make CEF tables smaller B . to enable label switching on the frame mode interface C . to restrict MPLS availability to predefined time periods D . to restrict label switching to a limited number of networks E . to restrict end users from seeing the routers in the MPLS network

  查看最佳答案

• In towing it is desirable for the tug and the vessel to ride wave crests simultaneously because（）.

  A . shock loading on the tow line is reduce B . towing speed is improved C . the vessel is more visible from the tug D . the catenary of the tow line is reduced

  查看最佳答案

• The cat is __________ beautiful animal, but its intelligence leaves much to be desired.

  查看最佳答案

• Which element of a process would answer the question: “Why is it crucial to understand this process” ?

  查看最佳答案

• Why is it better to use a strong verb than to use a noun?

  A.Nouns show action B.Nouns are informal. C.Verbs show action D.Verbs are informal.

  查看最佳答案

• Why is it hard to say when a piece of country becomes a suburb __________

  查看最佳答案

• The key for its success is its response to the urgent desire of countries along the belt and road to strengthen mutually beneficial cooperation, the idea of openness and inclusiveness shared by all the people in the world.

  查看最佳答案

• Why does the author think it is wrong to believe that “the public speaker is a specially gifted individual” (Para. 4)?

  查看最佳答案

• Why is it difficult to predict the possible effects of electromagnetic fields on an airplane's computers？

  A．Because it is extremely dangerous to conduct such research on an airplane. B．Because it remains a mystery what wavelengths are liable to be interfered with. C．Because research scientists have not been to produce the same effects in labs. D．Because experts lack adequate equipment to do such research. 此题为多项选择题。

  查看最佳答案

• 听力原文：W: Why is it that I found some letters addressed to you in my mailbox lately, Paul？

  M: Didn't Mike tell you that I'm having the post office forward my mail to your place until I've got a new apartment？ Q: What's happening to Paul's letters？ (13) A．His letters are being forwarded to his new apartment. B．His letters are being sent to his old address. C．He tells Mike to deliver his mail to the woman's house. D．He has the post office deliver his mall to the woman's house.

  查看最佳答案

• The reason why we often say “the way I see it” or “in my experience” in communication is to ________.

  A.raise a different opinion without offending the listener B.contrast two different ideas to learn from each other C.point out the mistakes in the listener’s words D.stress what is going to be said is original

  查看最佳答案

• Why is it impossible to use the new technique to search for life in other solar systems now？

  查看最佳答案

• When you communicte with people, it is not unusul to find yourself in sitution ____ you hve toWhen you communicte with people, it is not unusul to find yourself in sitution ____ you hve to politely declinen offer.where B．which C．wht D．why

  A．where B．which C．what D．why

  查看最佳答案

• Why does Mr.Wang think it is unnecessary to cover all of additional risks________？

  A．A.It is not useful B．B.It is not necessary C．C.They have to pay an extra premium for special additional risks D．D.They don't like addtional risks

  查看最佳答案

• According to the professor, why is it difficult to classify remoras' symbiotic relationships？

  A．They appear to demonstrate parasitic behavior. B．Their behavior. can be both harmless and helpful. C．They derive various benefits from their hosts. D．Researchers have inadequate observational equipment.

  查看最佳答案

• Why is it important to know your own psychological space needs（）

  A．Because everyone's need is unusual in the world B．Because they affect people to make their own choices C．Because people don't want to be bothered by their family members D．Because they are decided by economic reasons

  查看最佳答案

• Based on the understanding of paragraph 6 of the text, why is it difficult to store patients’ genome data（）

  A．data will also pose a computational challenge B．the information would be an attractive target for a hacker working C．the data were organized quite differently D．scientists often disagree on the importance of particular genetic

  查看最佳答案

• —Customer：We have ordered for almost one hour. Why is it so hard to get our dishes ready in your restaurant？

  —Waiter:I’m really sorry about that.() 对 错

  查看最佳答案

• Distinguish between surface-level diversity and deep level diversity. Why is it importance to underside the difference between the now？

  查看最佳答案

• Why is it important to provide the students with a variety of speaking activities?

  A．A variety of speaking activities will enable students to cope with different situations in reality. B．Variety helps to control the activities. C．Variety helps keep motivation high. D．Variety may suit students of different learning styles. 此题为多项选择题。

  查看最佳答案

• Abjee is going to log on to his network.His network does not employ traffic padding mechanisms.Why will it be easy for someone to steal his password？()

  A.Because his password could be more than two weeks old B.Because of he predictability of the length of the login and password prompts C.Because the Cleartext user name and password are not encrypted D.Because there is no provision for log analysis without traffic padding, thus no accountability when passwords are lost

  查看最佳答案