【单选题】Every Java application program must have
【简答题】● Every valid character in a computer that uses even (71) must always have an even number of1bits. (71)A. parity B. check C. test D. compare ● The maximum number of data that can be expressed by 8 bit...
【单选题】下面JavaScript语句中能正确输出“H2O”字符串的表达式是()。
A.
str=”2” document.write(“H”+str.sub()+”O”);
B.
str=”2” document.write(“H”+str.sup()+”O”);
C.
str=”2” document.write(H+str.sub()+O);
D.
str=”2” document.write(H+str.sup()+O);
【单选题】20世纪70年代,西方资本主义遭遇严重的经济危机,战后( )两极对抗的冷战格局出现重大变化,两大阵营的力量对比更趋平衡,尽管局部战争仍有发生,但短时期内爆发世界大战的可能性越来越小。
【判断题】The superposition theorem can be applied to both linear and nonlinear circuits ( )叠加定理既可用于线性电路,也可用于非线性电路。( )
【单选题】Every C++ program must have ________.
D.
a function called main.
【多选题】以下属于20世纪70年代世界局势变化的是( )