地壳中含量最多的金属元素是( )
A.Fe
B.Al
C.Si
D.O
答案:B
China won 100 medals in the Beijing Olympic Games, which is almost _____they won at the Sydney Olympic Games.
A.twice as many as
B.as many as twice
C.as much as twice
D.twice as much as
对一般现浇结构,拆除模板的顺序为()
A.先拆承重模板,后拆非承重模板
B.先拆侧模,后拆底模
C.与支模顺序相同
D.拆除模板后再进行预应力张拉