磁粉探伤所用的磁粉必须具有()磁导率和()矫顽力两个重要性能
参考答案:高的;低的
防治复苏后缺氧性脑病的合理措施有哪些()
A.应用甘露醇
B.利尿剂
C.应用利多卡因
D.降低颅脑温度或冬眠疗法
E.高压氧舱治疗
---What makes you decide to buy a new house in the town? ---This town is _______ pollution.
A.far from
B.apart from
C.free from
D.away from