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If a voltmeter is connected across a line, it must be protec

题目
单选题
If a voltmeter is connected across a line, it must be protected with a（）
A

shunt

B

high-resistance coil in the armature circuit

C

low-resistance coil in the armature circuit

D

shunt and a coil of high resistance

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相似问题和答案

第1题：

If you travel by ship across the Pacific Ocean, you cross the International line.翻译


参考答案：如果你坐船穿过太平洋，那你就穿过了国际日期变更线

第2题：

Click the Exhibit button. Given:Which statement is true if a TestException is thrown on line 3 of class B? ()

A.Line 33 must be called within a try block.

B.The exception thrown by method1 in class A is not required to be caught.

C.The method declared on line 31 must be declared to throw a RuntimeException.

D.On line 5 of class A, the call to method2 of class B does not need to be placed in a try/catch block.


参考答案：B

第3题：

When you go across the line, you change your calendar one ______ day, back or ahead.

A、all

B、more

C、full

D、less


标准答案:C

第4题：

You have configured a Cisco Catalyst switch to perform Layer 3 routing via an SVI and have  assigned that interface to VLAN 20. To check the status of the SVI， you issue the show interfaces vlan 20 command at the CLI prompt. You see from the output display that the interface is in an "up/up" state.  What must be true in an SVI configuration to bring the VLAN and line protocol up？（）

  • A、The port must be physically connected to another Layer 3 device.
  • B、At least one port in VLAN 20 must be active.
  • C、The Layer 3 routing protocol must be operational and receiving routing updates from neighboring peer devices.
  • D、Because this is a virtual interface， the operational status will always be in an "up/up" state.

正确答案:B

第5题：

Which type of hop in an ERO must be directly connected to the previous hop?()

A.full

B.strict

C.loose

D.partial


参考答案：B

第6题：

Given:Which is true?()

A.If line 10 is removed, the compilation succeeds.

B.If line 11 is removed, the compilation succeeds.

C.If line 12 is removed, the compilation succeeds.

D.If line 13 is removed, the compilation succeeds.

E.More than one line must be removed for compilation to succeed.


参考答案：C

第7题：

Erna Hart _______ a good swimmer; she swam across the English Channel when she was only fourteen years old!

A、must be

B、must have been

C、could be

D、should have been


正确答案：A

第8题：

What is a FALSE statement concerning the line throwing appliance on a vessel ().

A.A drill on its use must be held once every three months

B.The actual firing is at the discretion of the Master

C.The auxiliary line must be of a light color

D.The auxiliary line must be at least 500m long


正确答案：C

第9题：

Which statement is true about IBGP routers? ()

A. They must be fully meshed

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参考答案：C

第10题：

Which statement is true about IBGP routers? （）

  • A、They must be fully meshed
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正确答案:C

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