栽培食用菌时,培养基的灭菌方法有()、()、()、()、巴氏灭菌法。
参考答案:常压蒸气灭菌法;常压间歇灭菌法;锅炉输送蒸汽灭菌法;高压蒸气灭菌
(2013·齐鲁名校二模)Though the suspect refused to admit that he had stolen the precious diamond at first, he ________ and admitted everything when he was shown the videotape.
A.broke off
B.broke away
C.broke down
D.broke into
胚珠的构造包括()、()、()、()、()、()。