试样容器装好且油料封闭以后,应立即检查是否有()
A.游离水
B.渗漏
C.乳化层
D.杂质(污染)
参考答案:B
At first, he disliked his stepmother, but he learned to accept her___________.
A.on time
B.in time
C.at times
D.in no time
属无机碘的对比剂是()
A.碘必乐
B.碘化油
C.碘番酸
D.碘化钠
E.碘苯酯