指示标志（也称收发标志），即物流包装的分类标志、供货号、体积、收发货地点及单位、运输号、件数等。
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由此撕开标志，表示包装的撕开部位。符号的三个箭头指向表示撕开的方向。一般用于木箱等外包装上。
A. 对
B. 错
在商品包装中，运用分装与改装策略的目的是为了保护商品的价值和使用价值。
A. 对
B. 错
—How long ________ at this job?—Since 1990.
A. were you employed
B. have you been employed
C. had you been employed
D. will you be employed
The little girl ________her heart out because she ________ her toy bear and believed she wasn’t ever going to find it.
A. had cried; lost
B. cried; had lost
C. has cried; has lost
D. cries; has lost
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