作物物候期
参考答案:
指作物生长发育在一定外界条件下所表现出的形态特征,人为地制定的一个具体标准。
He wouldn’t listen to others’ advice. Obviously, it was his own attitude that _____ his loss.
A.argued for
B.accounted for
C.searched for
D.intended for
心肌灌注显像的适应证有()。
A.冠心病心肌缺血的早期诊断
B.冠状动脉危险度分级
C.估计心肌细胞的活性
D.心肌缺血治疗效果的评价
E.急性缺血综合征的评价