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【单选题】
生产瓦楞纸板时，瓦楞原纸和箱纸板的定量配比最好为（ ）
A.
1:1
B.
1:2
C.
2:1
D.
任意配比都可以
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】青少年一日三餐合适的热量分配比例是（）
A.
早餐20%，中餐60%，晚餐20%
B.
早餐30%，中餐40%，晚餐30%
C.
早餐40%，中餐40%，晚餐20%
D.
早餐30%，中餐50%，晚餐20%
E.
早餐20%，中餐50%，晚餐30%
【单选题】Part ADirections: Read the following four texts．Answer the questions below each text by choosing A, B, C or D．(40 points)The long year of food shortage in this country have suddenly given way to appar...
A.
The abundant food supply is not expected to last
B.
Britain is importing less food
C.
Despite the abundance, food prices keep rising
D.
Britain will cut back on its production of food