双人拦网下的防守阵型有()、()、()、()等四种防守阵型。
参考答案:“心跟进”、“边跟进”、“内撤”、“双卡”
We had planned to arrive at the park at 9 a.m., but unluckily, the car_____on the way. [ ]
A. broke away
B. broke down
C. broke up
D. broke into
销售物流是通过一系列物流方式实现销售,()不属于销售物流范围内。
A.包装
B.送货
C.生产加工
D.配送