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Class C fires are best extinguished by （）.

题目
单选题
Class C fires are best extinguished by （）.
A

foam extinguishers

B

water spray equipment

C

dry powder extinguishers

D

soda-acid extinguishers

参考答案和解析
正确答案： C
解析： 暂无解析
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相似问题和答案

第1题：

Her article is()in her class.

A. better

B. well

C. the best


参考答案：C

第2题：

The emergency signal for fires is sounded on the ship’s whistle and general alarm as _____.

A.a continuous ringing for 10 seconds

B.one short ring followed by one long ring

C.two long rings of at least 20 seconds

D.a continuous ringing until the fire is extinguished


正确答案：A
火灾紧急信号被船上的汽笛和警报发出连续10秒的鸣放。

第3题：

Which of the following is the best title for this text？

[A] The Middle Class on the Alert

[B] The Middle Class on the Cliff

[C] The Middle Class in Conflict

[D] The Middle Class in Ruins


正确答案：B

第4题：

Which Man class properly represents the relationship "Man has a best friend who is a Dog"？（）

  • A、class Man extends Dog{}
  • B、class Man implements Dog{}
  • C、class Man{private BestFriend dog；}
  • D、class Man{private Dog bestFriend；}
  • E、class Man{private Dog；}
  • F、class Man{private BestFriend；}

正确答案:D

第5题：

A fire of escaping liquefied flammable gas is best extinguished by ______.

A.cooling the gas below the ignition point

B.cutting off the supply of oxygen

C.stopping the flow of gas

D.interrupting the chain reaction


正确答案：C
液化气体泄漏着火，最有效的扑救方法是断开气源。

第6题：

Oil fires are best extinguished by ______.

A.cutting off the supply of oxygen

B.removing the fuel

C.cooling below the ignition temperature

D.spraying with water


正确答案：A
灭油火的最好灭火器是切断氧气供应。

第7题：

Fires of which class would most likely occur in the engine room of a vessel ________．

A.Classes A and B

B.Classes B and C

C.Classes C and D

D.Classes A and D


正确答案：B

第8题：

Which of the following is the best title for this text？

A．The Middle Class on the Alert

B．The Middle Class on the Cliff

C．The Middle Class in Conflict

D．The Middle Class in Ruins


正确答案：B

第9题：

Which two statements about the best effort model for QoS are true？（）

  • A、delay sensitive packets are given preferential treatment
  • B、the default policy identifies a delay sensitive class and default class
  • C、the default policy identifies a delay sensitive class， best effort class， and default class
  • D、the model is highly scalable
  • E、the model is still predominant on the internet F the model provides guaranteed service

正确答案:D,E

第10题：

单选题
0il fires are best extinguish by（）.
A

cutting off supply of oxygen

B

removing the fuel

C

cooling below the ignition temperature

D

spraying with water


正确答案： A
解析： 暂无解析

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