海船船员考试

单选题The usual number of single-acting pistons used in a variable stroke axial-piston pump is （）.A 3 or 5B 5 or 7C 7 or 9D 9 or 11

题目
单选题
The usual number of single-acting pistons used in a variable stroke axial-piston pump is （）.
A

3 or 5

B

5 or 7

C

7 or 9

D

9 or 11

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相似问题和答案

第1题：

An （70） statement can perform. a calculation and store the result in a variable sothat it can be used later.

（70）

A. executable

B. input

C. output

D. assignment


正确答案：D

第2题：

Which three features work together, to allow a SQL statement to have different cursors for the samestatement based on different selectivity ranges?()

A. Bind Variable Peeking

B. SQL Plan Baselines

C. Adaptive Cursor Sharing

D. Bind variable used in a SQL statement

E. Literals in a SQL statement


参考答案：A, C, E

第3题：

A class design requires that a member variable should be accessible only by same package, which modifer word should be used?

A.protected

B.public

C.no modifer

D.private


参考答案：C

第4题：

Which of the listed devices may be used as a digital device?

A.variable resistor

B.diode

C.strain gauge

D.thermistor


正确答案：B

第5题：

An ______ statement can perform. a calculation and store the result in a variable so that it can be used later.

A．executable

B．input

C．output

D．assignment


正确答案：D
解析：译文的含义是：()语句可以执行计算，并将结果存储在变量中，以便以后使用。选项A、B、C、D的含义分别是可执行、输入、输出、赋值。选项D符合题意，为所选。

第6题：

An(73)statement can perform. a calculation and store the result in a variable so that it can be used later。

A．assignment

B．executable

C．input

D．output


正确答案：A
解析：赋值语句能执行计算，并将计算结果存入变量，待以后使用。

第7题：

l An (5) statement can perform. a calculation and store the result in a variable so that it can be used later.

A. executableB.inputC.outputD. assignment


正确答案：
    

第8题：

● （73） statement can perform. a calculation and store the result in a variable so that it can be used later.

（73）

A. Assignment

B. Control

C. I/O

D. Declaration


正确答案：A

第9题：

The usual number of single-acting pistons used in a variable stroke axial-piston pump is

A.3 or 5

B.5 or 7

C.7 or 9

D.9 or 11


正确答案：C

第10题：

What does the protocol field inside the PPP frame indicate？（）

  • A、the protocol used to determine the authentication method
  • B、the protocol used to identify the data in the Information field
  • C、the protocol used to carry the PPP frame
  • D、the protocol used to decode the FCS field
  • E、the protocol used to detect the number of padding bytes

正确答案:B

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