【简答题】Which of the following signs means 'Throw litter here.' ? [ ]
【单选题】如何给所有的 标签添加背景颜色 ?
A.
.h1 {background-color:#FFFFFF}
B.
h1 {background-color:#FFFFFF;}
C.
h1.all {background-color:#FFFFFF}
D.
#h1 {background-color:#FFFFFF}
【判断题】上海是全国最大的港口和最大的综合性城市,北京市全国最大的商业城市和贸易基地,是中国第一大城市。( )
【单选题】Pick up the rubbish and throw it in the garbage __________.
【单选题】When are you allowed to throw plastic garbage overboard?
A.
Being more than 25 miles from shore.
B.
Only at night when it’s dark.
C.
Being more than 6 miles from shore.
【单选题】What value is represented by the bit pattern 01011100 when interpreted using floating-point format in which the most significant bit is the sign bit, the next three bits represent the exponent field i...
【判断题】Throw garbage here and there.
【判断题】上海是全国最大的港口和最大的综合性城市,北京是全国最大的商业城市和外贸基地,是中国第一大城市。( )