【判断题】Solar panels, wind turbines, hydro power and geothermal energy and hydrocarbons (natural gas or coal) can all be used to produce hydrogen (a primary energy).
【单选题】Just as people differ in their ability to hear sound, ______ differ in their appreciation of sounds.
【单选题】听力原文: (24) The Reserve Bank of Australia said yesterday that it would cut official interest rates by 0.5 percentage points to around 7.0 percent, following falls in inflation and in an attempt to help...
【简答题】The ship was cut into several pieces in the accident.
【简答题】下列程序输出第1~4行依次为_____,_____,_____,_____: #include using namespace std; class A{ int a, b, c; public: A(){ a=0; b=0; c=0; } A(int x, int y=2, int z=3){ a=x; b=y; c=z; } void Print() { cout Pr...
【单选题】When cultures differ, __________.
A.
communication practices differ
B.
people who speak a particular language differ
C.
people from a particular geographic region differ
D.
people from a certain culture differ
【多选题】按生命元素对人体正常生命作用不同可分为( )。
【简答题】#include using namespace std; class A{ int a, b, c; public: A(){ a=0; b=0; c=0; } A(int x, int y=2, int z=3){ a=x; b=y; c=z; } void Print() { cout Print(); a1.Print( ); a2.Print( ); a3.Pri...
【单选题】Gas turbines differ from steam turbines in that ______.
A.
steam rather than gas is used to turn a shaft
B.
vapor rather than gas is used to turn a shaft
C.
the former uses gas to turn a shaft
D.
the latter uses gas to turn a shaft