仲裁协议对仲裁事项没有约定或约定不明确的,当事人可以补充协议;达不成补充协议的,仲裁协议无效。 ( )
参考答案:对
骨髓铁染色,细胞内铁降低见于()
A.轻型地中海贫血
B.铁粒幼细胞贫血
C.巨幼细胞贫血
D.失血性贫血
E.缺铁性贫血
There are a lot of apples ______ the tree and some birds are ______ the tree, too. [ ]
A. in, in
B. in, on
C. on, on
D. on, in