【单选题】We must take part in physical labor in order to ______ ourselves more closely with the working people.
【判断题】苏联科学院数学学家盖森,创立了科学外史论。()
【简答题】计算二重积分xInydxdy,其中D:0≤x≤4,1≤y≤e.
【单选题】We all know that programming language is the system of syntax, grammar, and symbols or words used to give instructions to a computer. Because computers work with binary numbers, first-generation langu...
A.
it is used in designing software
B.
it is hardware-independent
C.
is should be translated into the computer language by software
D.
it is designed to solve some specific problem
【单选题】We all know that programming language is the system of syntax, grammar, and symbols or words used to give instructions to a computer. Because computers work with binary numbers, first-generation langu...
A.
it is used in designing software.
B.
it is hardware-independent.
C.
is should be translated into the computer language by software.
D.
it is designed to solve some specific problem.
【简答题】计算二重积分 ,其中D={(X,y)1 0≤X≤1,0≤y≤1}.
【简答题】计算二重积分 ,其中D={(x,y)|0≤x≤1,0≤y≤1).
【单选题】So far we have done a lot to build a low-carbon economy, but it is ____ ideal (理想). We have to work still harder.