What are the main parts of an excellent expository writing ?

A . the information B . the formation C . the scatter D . the frictio

A . Oil Rig chain and Oil Field Stud Link chain B . Flash-butt welded chain and Di-Lok chain C . Flash-butt welded chain and Oil Rig chain D . Oil Field Stud Link chain and Flash-butt welded chai

A . electricity B . fuel C . oxygen D . heat

A . main bearing shells B . main bearing C . steel D . bearing metal

A . severity level B . facility C . log message name D . time stamp E . error codes F . access privilege

A . fuel B . oxygen C . heat D . electricity

A . Busbar B . Load panel of main generator C . Paralleling panel D . Shore connection box

A .  The command fails unless you specify the FORCE option. B .  The command fails unless you specify the REUSE option. C .  The command must be reissued with a more specific discovery string. D .  The other disks， already part of the disk group，are ignored.

A . The fire pump B . Exposed hard piping C . The hydrant valve D . The fire hose

A、U-shape B、 Classroom-type C、Theater-type D、Hollow-shape

A、They are talking about basic risks B、They are talking about insurance coverage C、They are talking about what goods should be insured D、They are talking about when the goods should be insured

A．The mining industry． B．The service industry． C．The construction industry． D．The light industry．

A. Nationalization of the country's gas industry and new election. B. Constitutional reform. and new election. C. Constitutional reform. and revitalization of the country's gas industry. D. Nationalization of the country's gas industry and constitutional reform,

Most Americans stop working at the age of sixty-five or seventy and retire. Because work is such an important part of life in American culture, retirement can be very difficult for Americans. Retirees often feel that they are useless and unproductive. Of course, some people are happy to retire, but leaving one's job, whatever it is, is a difficult change, even for those who look forward to retiring. Retirement can also bring financial problems. Many people depend on Social Security checks every month. During their working years, employees contribute a certain percentage of their salaries to the government. Each employer also gives a certain percentage to the government. When people retire, they receive this money as income. Sometimes these checks do not provide enough money to live on, because prices are prone to increasing, a process known as "inflation". Senior citizens, those over sixty-five, typically have to have savings in the bank or other retirement plans to make ends meet. In addition, many senior citizens have to change their lifestyles after retirement. They have to spend carefully to be sure that they can afford to buy food, fuel and other necessities(必需品). Of course, many senior citizens are happy with their retirement. They have time to spend with their families or to enjoy their hobbies. Some continue to work part-time, others do volunteer work. Some, like those in the Retired Business Executives Association, even help young people to start new businesses. Many retired citizens also belong to "Golden Age" groups. These organizations plan trips and social events. There are many other opportunities for retirees. Which of the following could be the best title of the passage？ A．Golden Age Groups B．The American Opinion of Work C．The Importance of Work in America D．The Problems of Retirement in America

A. Schedule a normal backup every Sunday. Schedule incremental backups every Monday through Saturday. B. Schedule a normal backup every Sunday. Schedule differential backups every Monday through Saturday. C. Schedule a copy backup every day. D. Schedule a normal backup every day.