树脂再生用盐水浸泡,即用流速相当慢的盐水通过树脂()。
(A)30min
(B)40min
(C)50min
(D)60min
参考答案:B
The couple __________in 1990, but happily they reunited on the Valentine’s day.
A. broke up B broke down C. broke out D. broke into
MRI检查技术中,"将图像上由脂肪成分形成的高信号抑制下去,使其信号强度减低,而非脂肪成分的高信号不被抑制,保持不变。可以显示原来被脂肪的高信号所掩盖的病灶"属于()
A.脂肪抑制
B.水成像MRI
C.自旋回波序列
D.功能MRI(fMRI)
E.磁共振血管成像(MRA.