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Which of the following statements about pump operations is N

题目
单选题
Which of the following statements about pump operations is NOT a correct statement?（）
A

In order for a fluid to be pumped, a fluid must be made to flow

B

A substance must be cold in order for it to be pumped

C

The kinetic energy imparted by the pump can be used to force a liquid through a hydraulic system

D

A pump must receive its energy from an external source

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相似问题和答案

第1题：

Which of the following statements about ORACLE is (are) correct?

Ⅰ.ORACLE follows SQL standard

Ⅱ.ORACLE database defines two logical types: table and view

A．Ⅰonly

B．Ⅱ only

C．Ⅰ and Ⅱ

D．none of the above


正确答案：C

第2题：

Which three statements are true about Oracle Data Pump export and import operations?()

A. You can detach from a data pump export job and reattach later.

B. Data pump uses parallel execution server processes to implement parallel import.

C. Data pump import requires the import file to be in a directory owned by the oracle owner.

D. The master table is the last object to be exported by the data pump.

E. You can detach from a data pump import job and reattach later.


参考答案：A, B, D

第3题：

Which of the following statements about Leopold and Rudolph Blaschka is TRUE?

A. They were brothers.

B. They were artists.

C. They were florists.

D. They were farmers.


正确答案：B

32．答案为B。根据第一段最后一句，the work of two artists-naturalists，Leopold Blaschka and his son Rudolph作出该项选择。

第4题：

Which of the following statements is NOT true about RMAN？（）

  • A、It improves usability by enabling you to reuse the scripts to perform recovery operations.
  • B、It detects block corruption while restoration and recovery operations.
  • C、It enables you to perform block media recovery.
  • D、It is capable to recover through unrecoverable operations， with only full database backups.

正确答案:A

第5题：

Which of following statements about testing software with data is (are) true?

Ⅰ.The primary purpose of such testing is to find errors.

Ⅱ.Such testing can demonstrate the existence of errors but can not demonstrate the absence of errors.

A．Neither

B．Ⅰ only

C．Ⅱ only

D．Ⅰ and Ⅱ


正确答案：B

第6题：

Which of the following statements are true of collectivist culture?

A、Disclosure of private feeling is distasteful.

B、People are suspicious of outsiders.

C、Uniformity is not highly thought of.

D、there is a positive attitude about words of disagreement.


参考答案：B

第7题：

When received the order "Finished With Engine", which of the following operations is wrong?

A.stop the L.O pump, S.W pump, jacket water cooling pump immediately

B.stop the F.O booster pump

C.engage the turning gear, turn the main engine

D.open the main engine scavenge air trunk's drain cocks


正确答案：A

第8题：

In the following statements about graph operations，which one is NOT correct?

A．Finding critical path is an operation on directed graph

B．Finding critical path is an operation on undirected graph

C．Spanning tree of a graph may not be unique

D．Minimum spanning tree of a graph may not be unique


正确答案：B

第9题：

Which of the following statements about language is NOT true?

A.Language is a system
B.Language is symbol
C.Animals also have language
D.Language is arbitrary

答案：C
解析：
本题考查语言的定义。
本题要求选不正确的，C选项，动物也有语言，错误。语言是人类在交际中使用的一套任意的声音符号系统。动物没有语言，动物只是本能发出声音。综上，应选C。
A选项，系统的，故排除。
B选项，符号，故排除。
D选项，任意的，故排除。
故正确答案为C项。

第10题：

Which two statements are true about standard database auditing（）

  • A、DDL statements can be audited.
  • B、Statements that refer to stand-alone procedure can be audited.
  • C、Operations by the users logged on as SYSDBA cannot be audited.
  • D、Only one audit record is ever created for a session per audited statement even though it is executedmore than once.

正确答案:A,B

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