The most [crucial]problem any economic system faces is how to use its scarce resources.

[单选题]The most [crucial]problem any economic system faces is how to use its scarc

[单选题]The most [urgent]problem any economic system faces is how to use its scarce

[单选题]The most [crucial]issue at present is how to solve the problem of food safe

[单选题]The most [crucial]issue at present is how to solve the problem of food safe

[单选题]The most [crucial]issue at present is how to solve the problem of food safe

[单选题]The most crucial time for any bearing with regards to lubrication isA．during low loadsB．after proper oil viscosity is reachedC．during startingD．after cleaning filters

[单选题]F．or any information system to serve its purpose,the information must be ( ) when it is needed.A．integralB．availableC．irreplaceableD．confidential

[单选题]The demand for a given resource will most likely decrease if the prices of

[单选题]For any information system to serve its purpose，the information must be( )w

[单选题]The country is [abundant]in natural resources.A.richB.colorfulC.mysteriousD