（）是指产品的计划主要根据预测，并在接到用户订单之前已生产出产品。
A．按订单装配
B．按库存生产
C．按订单设计
D．按订单生产
参考答案：B
If Tom doesn’t realize his mistake, he will _____ one day.
A．heart- broken
B．keep his word
C．get the hang of it
D．get into trouble
限定的有害生物可以区分为（）和（）两种。
m doesn’t realize his mistake, he will _____ one day.