短暂性脑缺血发作(TIA),出现相应的症状及体征,完全恢复最长应在()。
A.6小时内
B.12小时内
C.24小时内
D.48小时内
E.72小时内
参考答案:C
One needs to work hard to realize his or her dream,as the saying goes”Hard work success”.
A.1ies in
B.results from
C.1eads to
D.begins with
钢中某元素含量高时,钢材的强度高,而塑性小、硬度大、性脆和不易加工,此种元素为()。
A.碳
B.氢
C.磷
D.硫