轿厢顶部装有：（）.
A.安全钳
B.轿项防护栏
C.自动开门机
D.轿顶检修箱
参考答案：B, C, D
连词成句。
l. makes beautiful Danny cake a
2. party People for at the 3:15 arrive
3. fifteen minutes in leave will for Beijing The plane
4. does Jenny What have in hand her
5. have cookies letters How many does
实体产品物流网络和非实体物流网络（主要指物流信息网络）结合在一起，就形成了完整的物流网络。（）
