The following statements are usually related to collaborative competence except______.

A . Dissipate heat B . Trap foreign matter C . Separate air from the oil D . All of the above

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

A .  uses symmetric crypto for keys distribution B .  uses symmetric crypto for proof of origin C .  uses symmetric crypto for fast encrypted/decryption D .  uses asymmetric crypto for message confidentiality E .  uses symmetric crypto to transmit the asymmetric keys that is thenused to encrypt a sessio

A . Layer 2 switching and Layer 3 routing are mutually supported. B . The port will not be associated with any VLAN. C . The routed switch port supports VLAN subinterfaces. D . The routed switch port is used when a switch has only one port per VLAN or subnet. E . The routed switch port ensures that STP remains in the forwarding state.

A . Defining B . Matching C . Gap-filling D . Labeling

A . Contactors control current and relays control voltage B . A relay is series connected and a contactor is parallel connected C . Contactors can handle heavier loads than relays D . Contactors are made from silver and relays are made from copper

A . The voltage drop across each resistor is the same B . The total current flow equals the reciprocal of the sum of the individual currents C . The total resistance equals the sum of the individual resistances D . The total voltage equals the sum of the individual voltages across each resistance

A . WPARs use dedicated cores and shared memory. B . WPARs are restricted to using dedicated resources. C . WPARs share the resources of a single AIX instance. D . WPARs use shared cores， memory， and dedicated network adapters.

A .  An SCN is never used to perform a Flashback Table recovery. B .  If a significant number of changes have been made to the table， row movement must be enabled. C .  The tablespace must be offline before performing a Flashback Table recovery. D .  Flashback Table recovery is completely dependent on the availability of undo data in the undo tablespace.

A . A store can only have one sales catalog. B . A sales catalog is used to bundle similar products. C . A sales catalog may be used to place a product in more than one category. D . Every store must have a sales catalog.

A . It is a teaching guide B . It is a blueprint to be strictly followed C . It takes into account syllabus and students D . It describes in advance what and how to teach

A . A file system cannot be mounted on a directory containing data. B . Mounting a file system on a mount point containing data will delete the data. C . Mounting a file system on a amount point containing data will make the data temporarily inaccessible. D . A systems administrator must manually create an empty directory prior to mounting an AIX JFS.

A . They increase the size of collision domains B . They allow logical grouping of users by function. C . They can enhance network security. D . They increase the size of the broadcast domain while decreasing the number of collision domains. E . They increase the number of broadcast domains while decreasing the size of the broadcast domains. F . They simplify switch administration.

A . It can only be used on systems running without partitions. B . It is relevant for IBM systems running the AIX operating system. C . It is the main benchmark for sizing systems that will run HPC applications. D . It has a direct relationship with other benchmarks like TPC-C and SpecjAppServer2004.

A . It is lower than the ignition temperature B . It is the temperature at which a substance will spontaneously ignite C . It is the temperature at which a substance, when ignited, will continue to bum D . It is the temperature at which the released vapors will fall within the explosive range

A、Credits increase assets and increase owners'equity B、Credits decrease assets and decrease liabilities C、Debits increase assets and increase owners'equity D、Debits increase assets and decrease liabilities

A．One should keep in touch with his friends． B．Never delay expressing your true feelings to a frienD C．A true friend will stand by you forever． D．Late is better than never．

A．The key that unlocked his genius.(Paragraph Two) B．Mr. Syson"s contention...has captivated curators...(Paragraph Three) C．...the monumental Virgin and Child with Saint Anne and Saint John the Baptist.(Paragraph Four) D．...an unfinished, yet searing, Saint Jerome.(Paragraph Six)

A．Black holes are dead stars. B．Black holes have gravity. C．Black holes are invisible. D．There is nothing as mysterious as a black hole. 此题为多项选择题。

A．Q ﹠ A session is usually held immediately after the oral presentation． B．Q ﹠ A session only benefits questioners． C．Q ﹠ A session is an integral part of academic presentations． D．Q ﹠ A session is arranged for most of the international academic conferenc E．