甲地耕种前原土地肥力评定为5级,收获后评定为6级,则该耕地的土地肥力更新系数为()。
A.1.1
B.1.2
C.1.4
D.1.8
参考答案:B
解析:
该耕地的土地肥力更新系数=。
It seems water______from this tap for some time. We'll have to take it apart to put it right.
A. had leaked B. is leaking C. leaked D. has been leaking
Torr是指()的单位。
A.真空度
B.磁场强度
C.体积
D.温度