除草剂药害
参考答案：
指的是在使用除草剂时，由于一些因素，产生对作物的不利现象。
The person who is _______ of the factory _______ ill since last week.
A．in charge; has been
B．in the charge; fallen
C．taking charge; was
D．in charge; fell
锅炉经过水压试验合格条件？
