Windows不允许对硬盘进行格式化。
举例说明如何进行土壤灭菌和灭虫？
The fuel booster pump and steam to fuel heater, together with fuel pipe heater tracer line should be shut off as soon as the （） order is acknowledged. ["finished with engines","stop","stand by","full ahead"]
听课方法指导包括（） ["笔记指导","质疑指导","听讲指导","明确识记目标"]
怎样选择苗圃地？
基肥的作用有哪些？如何正确地施用基肥？
