Cepheid variable of great absolute brightness would probably exhibit______.

A、set point B、control point C、deviation D、offset

A . a variable displacement axial piston pump B . a constant displacement axial piston pump C . a reciprocating piston pump D . a centrifugal pum

A . the use of excessive amounts of dunnage B . the use of excessive amounts of filler cargo C . the failure to stow some items in neat and uniform rows and tiers D . the skill，industry and interest of the longshoreme

A .  Local variables defined inside a method are destroyed when the method is exited. B .  Local variables are also called automatic variables. C .  Variables defined outside a method are created when the object is constructed. D .  A method parameter variable continues to exist for as long as the object is needed in which the method is defined.

A . NLS_LANGUAGE B . NLS_SORT C . NLS_CALENDAR D . NLS_CHARACTERSET E . NLS_TERRITORY

A . RESTORE B . RECOVER C . REPORT D . BACKUP

A . reset action B . proportional action C . two position action D . rate actio

A .  Instance variables are member variables of a class. B .  Instance variables are declared with the static keyword. C .  Local variables defined inside a method are created when the method is executed. D .  Local variables must be initialized before they are used.

A . It improves resync operations when the disk comes online after being taken offline for maintenance purposes.  B . It improves performance in the extended cluster configuration by reading from a local copy of an extent.  C . Fewer extent pointers are needed to describe the file and less memory is required to manage the extent maps in the shared pool. D . This feature enables faster file opens because of the reduction in the amount of memory that is required to store file extents.

A .  public int MAX_LENGTH=100； B .  final int MAX_LENGTH=100； C .  final public int MAX_LENGTH=100； D .  public final int MAX_LENGTH=100；

A .  NLS_LANGUAGE B .  NLS_SORT C .  NLS_CALENDAR D .  NLS_CHARACTERSET E .  NLS_TERRITORY

A . RIPv1 B . IGRP C . EIGRP D . OSPF E . IS-IS F . RIPv2

A . advance as the load increases B . retard as the load increase C . remain unchanged regardless D . always occur at top dead center

A .  long number = 345L； B .  long number = 0345； C .  long number = 0345L； D .  long number = 0x345L；

A . the beginning of the compression stroke B . the beginning of the suction stroke C . the end of the working stroke D . the end of the exhaust stroke

A、3 or 5 B、5 or 7 C、7 or 9 D、9 or 11

A . LSN_ADMIN B . TNS_ADMIN C . ADMIN_TNS D . TSN_ADMIN

A . RIPv1 B . EIGRP C . OSPF D . IGRP E . RIPv2

The development of writing was one of the great human inventions. It is difficult【36】many people to imagine language without writing; the spoken word seems intricately tied to the written【37】. But children speak【38】they learn to write. And millions of people in the world speak languages with【39】written form. Among these people oral literature abounds, and crucial knowledge【40】memorized and passed【41】generations. But human memory is short-lived, and the brain's storage capacity is finite.【42】overcame such problems and allowed communication across the miles【43】through the years and centuries. Writing permits a society【44】permanently record its poetry, its history and its technology. It might be argued【45】today we have electronic means of recording sound and【46】to produce films and television, and thus writing is becoming obsolete.【47】writing became extinct, there would be no knowledge of electronics【48】TV technicians to study; there would be, in fact, little technology in years to【49】There would be no film or TV scripts, no literature, no books, no mail, no newspapers, no science. There would be【50】advantages: no bad novels, junk mail, poison-pen letters, or "unreadable" income-tax forms, but the losses would outweigh the【51】. There are almost as【52】legends and stories on the invention of writing as there are【53】the origin of language. Legend has it that Cadmus, Prince of Phoenicia and founder of the city of Thebes,【54】the alphabet and brought it with him to Greece. In one Chinese fable the four-eyed dragon-god T'sang Chien invented writing. In【55】myths, the Babylonian god Nebo and the Egyptian god Thoth gave humans writing as well as speech. (36)

A．an analog signal B．a discrete signal C．a digital signal D．a sampled signal