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What is the principle behind dynamic braking as used on an a

题目
单选题
What is the principle behind dynamic braking as used on an anchor windlass?（）
A

Electrical loading

B

Mechanical distribution

C

Compressibility of air

D

Mechanical friction

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相似问题和答案

第1题：

what is “board sling” used for?


正确答案：It is used to carry the general cargoes during cargo handling.

第2题：

Which two statements are correct concerning DHCP Internal Server in the E－series router?()

A.Provide dynamic IPaddressesforDSIs.

B.Provide connectivity to DHCP servers on other subnetworks.

C.Provide dynamic IP addresses for SRC applications.

D.Provide dynamic IP addresses from pools used for PPPoE subscribers.


参考答案：A, C

第3题：

In the system development process,modularity is a very well-established principle used in the______phase．

A．design

B．analysis

C．implementation

D．testing


正确答案：A
解析：早期的远程通信方法是电报这种通讯方式。

第4题：

What is an advantage of dynamic routing?（）

  • A、Unlike static routing, dynamic routing provides redundant IP addresses for end-user devices
  • B、Unlike static routing, dynamic routing requires no initial user configuration
  • C、Dynamic routing can provide increased network availability when compared to static routing
  • D、Dynamic routing provides DNS services along with IP connectivity; static routing does not

正确答案:C

第5题：

Which statement is true regarding Dynamic Service Registration？（）

  • A、Dynamic service registration requires configuration in the listener .ora file.
  • B、Dynamic service registration can be used only with an Oracle9/instance.
  • C、Dynamic service registration cannot register a local listener that does not use TCP/IP or port 1521.
  • D、The PMON background process automatically registers each database instance if the necessary parameters have been set in the database initialization parameter file.

正确答案:D

第6题：

Which mode is used to allow only a single person to edit a configuration?()

A. configure batch

B. configure private

C. configure exclusive

D. configure dynamic


参考答案：C

第7题：

6． She was so angry at ________ he was doing ________she walked out．and closed the door heavily behind her．

A． what ; that

B． that ; what

C． that ; that

D． what ; what


正确答案：A
6．A【解析】What作do的宾语；so．．． that意为“如此 ……以至于”，引导结果状语从句。

第8题：

__________ refers to activities in which language is used for carrying out meaningful tasks.

A. Task principle

B. Skill principle

C. Communication principle

D. Meaningfulness principle


正确答案是:A

第9题：

What is Phantom RP used for？（）

  • A、it is used for load balancing in bidirectional PIM
  • B、it is used for redundancy in bidirectional PIM
  • C、it is used for redundancy in PIM-SM
  • D、it is used for load balancing in PIM-SM

正确答案:B

第10题：

What is used to prevent ‘ping-pong effects’, that is, rapid, successive handovers? （）

  • A、Discontinuous Transmission
  • B、Hysteresis
  • C、Dynamic Power Control
  • D、Frequency Hopping
  • E、Cell Load Sharing

正确答案:B

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