TIWI和TIWI均为高信号()TIWI和TIWI均为低信号()TIWI为低信号TIWI为高信号()
A.脂肪组织
B.白质
C.骨皮质
D.胆固醇
E.脑脊液
参考答案:A,C,E
实验室中两个试剂瓶的标签被腐蚀,只知道一瓶是盐酸溶液,另一瓶是硫酸钾溶液,要分辨它们,你认为可选用的鉴别试剂是(至少填两种)______,相关的化学方程式为:______.(任写一个)
完成句子。
1. Sheep _____ ______(以… 为食)grass.
2. Since he came to this class, he hasn't played ______ _______ (不再) as he did before.
3. _______ ________ (由于) his hard work, he achieved great success.
4. The policeman ______ (搜查) the thief ______ the lost money.
5. Please _______ _______ (参阅) your dictionaries if you meet new words.