不能利用脂肪酸的组织是()
A.肝脏
B.肾脏
C.肌肉
D.脑组织
E.心肌
参考答案:D
The new examination system has to be _______ in special regions before it can be applied nationwide. [ ]
A. put out
B. experimented out
C. tried out
D. taken out
二溴海因是一种释放什么成份的消毒剂()。
A.有效氯
B.有效溴
C.有效碘
D.二氧化氯