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问题
多项选择题
包装质量的直接要求()。
A.保护性
B.耐用性
C.实用性
D.可靠性
E.商品性
答案
参考答案:A, C, E
选择题
Read, match and write. 读—读,将图与句子搭配成对并在横线上写出相应的时间。
( )1.
A. I play ping-pong at two thirty in the afternoon.
( )2.
B. I read books at ten in the morning.
( )3.
C. When is breakfast? At six thirty.
( )4.
D. I go to school at eight o'clock.
( )5.
E. I have supper with my family at six in the evening.
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单项选择题
塑脆性岩石的塑性系数为:()
A、等于1
B、2~6
C、大于6
D、小于1
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