金融期货的功能是（）。

The user must interact with the (74) in order to accomplish task．

A．Printer

B．memory

C．CPU

D．operation system

The user must interact with the (74) in order to accomplish task．

A．Printer

B．memory

C．CPU

D．operation system

The user must interact with the(73) in order to accomplish task.

A．printer

B．memory

C．CPU

D．operating system

A．printer

B．memory

C．CPU

D．operating system

A、select user,password,logins from user group by logins;

B、select password,logins,user from user order by logins;

C、select user,password,logins, from user order by logins;

D、select logins,user,password from user order by logins desc;

User programs interact with the kernel through a set of standard(71). They request services to be provided by the kernel. Such services would include accessing a file: open close, read, write, link, or execute a file; starting or(72)accounting records; changing ownership of a file or(73); changing to a new directory; creating,(74), or killing a process; enabling access to hardware devices; and setting limits on system resources. Unix is a multi -user, multi -tasking operating system. You can have many users logged into a system simultaneously, each running many programs. It's the kernel's job to keep each process and user separate and to regulate access to(75), including cpu, memory, disk and other L/O devices.

A．system commands

B．system transfer

C．system calls

D．system rings

red file server. That user account is then accidentally deleted. Which of the following must be configured in order to decrypt those files？（）

A. Key recovery administrator

B. Key recovery agent

C. Trusted root certificate store

D. Root certificate store

Password is a secret series of(73) that enables a user to access a file, computer, or program. On multi-user systems, each user must enter his or her password before the computer will respond to(74). The password helps ensure that(75) users do not access the computer. In addition, data files and programs may require a password.

A．symbol

B．sign

C．characters

D．characteristic

he project, these processes interact with each other. （74） is following the process- Estimate Activity Durations.

（74）

A．Develop Schedule

B．Estimate Activity Resources

C．Define Activities

D．Sequence Activities

What must the user do for trouble-free operation？

A．Exchange the product

B．Follow instructions

C．Purchase another model

D．Redesign the kitchen