Compared to a univariate normal distribution, the distinguishing feature of a multivariate normal distribution is the need to specify a parameter that is related to:

A . high temperature distillate can be re- circulated to induce additional flashing B . scale formation is not a severe problem C . cold shocking is more effective in removing scale D . water purity is greatly increased at high capacity

A . DS3200 B . EXP3000 C . DS3300 D . DS3400

A . give better range performance in rain，hail，etc B . display small targets in a mass of dense sea clutter at a greater range C . have less sea return in choppy rough seas D . display a more maplike presentation for inshore navigatio

A . ignition lag B . engine horsepower C . lube oil system pressure D . specific fuel consumptio

A . dischargeendbeingsmallerthanthesuctionend B . smallsizeofimpeller C . lackofmovingparts D . easeatwhichthewearingringsmaybechanged

A . vertical position B . horizontal position C . boom stop angle D . minimum radius angle

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 . much faster B . focused primarily on cost C . not constrained by formal RFP D . technology focused E . less educated F . influenced by peer

A . Provides a highly available cluster of Power Systems enabling near linear scalability and disaster recovery across different sites. B . Incorporates a hardware locking mechanism which resembles the Parallel Sysplex on the mainframe， delivering performance and scalability. C . Enables near linear scalability by partitioning and clustering the database across multiple nodes， and adding nodes dynamically when needed. D . Provides scalability by employing a highly available cluster of servers interconnected by an Infiniband network and a central locking mechanism.

A . air quantity aspirated B . fuel injection pressure C . combustion pressure on the power stroke D . compression on the compression stroke

A . stronger B . thinner C . more corrosion resistant D . a lower grade steel

A . Slightly higher fuel consumption B . Lack of directional control when backing C . Inefficient at high shaft RPM D . Some unusual handling characteristic

A . be more suitable for river and harbor navigation B . provide better range performance on low lying targets during good weather and calm seas C . have a wider horizontal beam width D . have more sea return during rough sea conditio

A . the extra weight required for the diesel reduction gearing B . a minimum speed for the engines that limits the minimum speed of the vessel C . the higher fuel consumption per SHP D . the low efficiency of the system when a controllable pitch propeller is used

A . always be nearer to the equator B . always be nearer to the elevated pole C . be nearer to the pole in the Northern Hemisphere and nearer to the equator in the Southern Hemisphere D . be nearer to the pole or the equator depending on the latitudes of the arrival and departure positio

A . Manage multiple operating systems on a server B . Manage energy consumption and network traffic to increase efficiency C . Manage LPARs, operating systems and servers to reduce administration D . Manage workloads across multiple servers to optimize resource utilizatio

A . return on investment (ROI) B . net present value (NPV) C . discounted cash flow (DCF) D . B and C E . All of the above.

此题为判断题(对，错)。

A、Has lower duration. B、May have more or less prepayment risk. C、Allows an investor to select an exact maturity.