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单选题If both the “high level” and “low level” alarms come on for the same address of a centralized control console, the most likely problem is a/an （）.A sensor failureB failed alarmC low levelD extremely high level

题目
单选题
If both the “high level” and “low level” alarms come on for the same address of a centralized control console, the most likely problem is a/an （）.
A

sensor failure

B

failed alarm

C

low level

D

extremely high level

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相似问题和答案

第1题：

Which statement about the enabling of table compression in Oracle Database 11g is true?()

A. Compression can be enabled at the table, tablespace, or partition level for direct loads only.

B. Compression can be enabled only at the table level for both direct loads and conventional DML.

C. Compression can be enabled at the table, tablespace, or partition level for conventional DML only.

D. Compression can be enabled at the table, tablespace, or partition level for both direct loads and conventional DML.


参考答案：D

第2题：

( )is monitored on the drain tank and header tank by magnetic switches with a 20seconds delay to prevent false alarms due to surging

A.Low pressure of the lubricating oil

B.Low level of the lubricating oil

C.High temperature of the lubricating oil

D.High temperature of the cooling water


答案：A

第3题：

Canada is officially bilingual both at the federal level and at the provincial level.()

此题为判断题(对，错)。


正确答案:×

第4题：

Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean ______.

A.lower low water

B.high water

C.low water

D.sea level


正确答案：A

第5题：

Which two statements about FCIP and iSCSI are correct?()

A. The FCIP stack supports file-level storage for remote devices.

B. Both require high throughput with low latency and low jitter.

C. The purpose of FCIP is to provide connectivity between host and storage.

D. TheiSCSI stack supports block-level storage for remote devices.

E. The purpose ofiSCSI is to provide connectivity between separate wide-area SANs.


参考答案：B, D

第6题：

In the following statements about the principle of the low level controlling, which is WRONG? 0

A.Low level is monitored on the drain tank and header tank.

B.If there is high differential the filters pressure across the circulating

pumps is alarmed

C.The lubricating oil purifier cannot take oil from the drain tank

D.If the sea water pressure falls, this also operates an alarm


答案：C

第7题：

Overheating of the hydraulic fluid in an electro-hydraulic anchor windlass can result from a/an( ).

A.overload on the pump motor

B.low fluid level in the reservoir

C.low fluid viscosity around the shaft seal

D.high oil level in the sump


正确答案：B
解析：reservoir：储液器，油箱
译文：电液锚机液压流体过热有可能是油箱中液位低引起的。

第8题：

ENUM类型的字段level定义为(LOW、MIDDLE、HIGH),ORDERBYlevelasc的顺序是()

A、HIGH、LOW、MIDDLE

B、LOW、MIDDLE、HIGH

C、MIDDLE、LOW、HIGH

D、HIGH、MIDDLE、LOW


正确答案:B

第9题：

If both the ‘high level’and ‘low level’ alarms come on for the same address of a centralized（集中的） control console, the most likely problem is a/an ______.

A.sensor failure

B.failed alarm

C.low level

D.extremely high level


正确答案：A

第10题：

The height of a light is measured from which reference plane?

A.Mean low water

B.Mean high water

C.Average water level

D.Geographical sea level


正确答案：B

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