A general purpose MySQL instance is configured with the following options: —log-slow-queries —long-query-time=,0001 —log-slow-admin-queries —general-log —log-bin —binlog-format=STATEMENT —innodb-flush-log-at-trx-commit=1 Which three statements are true（）。

A . crosshead B . crown C . piston rod D . connecting rod

A . prevent an internal explosion in the pump when it is overheated B . enable a visual inspection of the pump while it is running C . insure a proper alignment of the pump coupling to the driver D . accommodate for friction between the impeller and the easing

A . warmer，less dense，and less stable B . cool，more dense，and drier C . muggy and cloudy D . extremely moist with high relative humidity

A . is B . be C . will be D . to be

A . help preheat the air for the furnaces B . help preheat the feedwater C . protect economizer from excessive heat D . prevent excessive furnace heat losse

A . valve guides B . oil control rings C . valve seats D . compression ring

A . It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point network B . It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF router C . It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access network D . It is used to determine which interfaces will send Hello packets to neighboring OSPF router

A . it is not used in multicast B . it determines the virtual address group for a multicast destination C . it dynamically registers individual hosts in a multicast group on a specific LAN D . it is used on WAN connections to determine the maximum bandwidth of a connection E . it determines whether Bidirectional PIM or PIM sparse mode will be used for a multicast flow

A .  it is not used in multicast B .  it determines the virtual address group for a multicast destination C .  it dynamically registers individual hosts in a multicast group on a specific LAN D .  it is used on WAN connections to determine the maximum bandwidth of a connection E .  it determines whether Bidirectional PIM or PIM sparse mode will be used for a multicast flow

A . referring to your crew B . reference for your captain C . return to your cabin D . received your cable

A . weigh down the anchor B . lubricate the anchor C . repel dangerous fish D . smooth the sea

A . hoisting；luffing；slewing B . lifting；raising；lowering C . rotating；raising；handling D . hosting；lowering；moving

A . eliminate hot air from the condenser B . maintain steady pressure in a system C . heat, or cool one fluid by means of another fluid D . reduce the engine room temperature in tropical climate

A . MySQL requires correct file ownership while remaining secure B . MySQL needs to be run as the root user, but file cannot be owned by it C . MySQL cannot be run as the root user

The (1) program means a program written in a high-level language. It is generally translated to an (2) program, which is in a form. directly understandably by the computer. The translation is usually done by a program called (3). A．assemble B．web C．C D．source

此题为判断题(对，错)。

对 错

A．senator B．solicitor C．councilor D．inspector

A．to persuade B．to entertain C．to explain