粮食的呼吸强度随着储粮温度的上升而()。
A、上下波动
B、不变
C、下降
D、上升
参考答案:D
There ______ quantities of apples in the basket and there was ______ milk in the bucket. [ ]
A. were; a number of
B. was; quantities of
C. were; a quantity of
D. was; a good many
鄂式破碎机主要是通过摆动鄂板周期性地压向固定锷板,将夹在中间的物料压碎。