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【多选题】
关于不确定性因素产生的原因,下列说法正确的是( )。
A.
所依据的基本数据不足或者统计偏差
B.
预测方法的局限
C.
未来经济形势的变化
D.
技术进步
E.
计算复杂的定量因素的影响
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【简答题】接待员如何识别客人有无预订 ?
【单选题】Mary likes a reading pen very much.
A.
点读笔
B.
阅读
C.
钢笔
【简答题】判断下列各图是(√)否(×)与句意相符。 (     ) 1. It's ten o'clock. (     ) 2. It's five o'clock. (     ) 3. It's twelve o'clock. (     ) 4. Have breakfast. (     ) 5. She's in the computer room. (     ) 6. It's time f...
【单选题】So that's fixed ---- Friday at 11 o'clock.
A.
I'm afaid that's out of the question.
B.
Right, I look forward to seeing you then.
C.
Goodbye.
【判断题】三相电路的功率因数角是指每相负载的阻抗角。
A.
正确
B.
错误
【单选题】Mary likes her reading pen very much.
A.
点读笔
B.
电子词典
C.
手机
【单选题】U9- reading pen
A.
圆珠笔
B.
钢笔
C.
点读笔
【简答题】脂酸合成过程中,乙酰CoA来源于()或(),NADPH来源于()。
【单选题】So that's Ok — Friday at 11 o'clock.
A.
I'm afraid that's out of the question .
B.
Right, I look forward to seeing you then .
C.
Goodbye.
【简答题】reading pen( )