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【多选题】
以下属于社会保障资金筹集模式现收现付制特点的是( )A保险费(税)率低,但随保险支出需求增长经常调整B不会形成资金积累,避免了贬值风险,但可能出现支付危机C保险费(税)率分阶段调整,呈阶梯式上升趋势 D留有一定积累,保证了资金来源的稳定性,避免了贬值损失
A.
A
B.
B
C.
C
D.
D
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【单选题】. As he has been well trained, this young man is ________ to be a teacher.
A.
delighted       
B.
possible        
C.
qualified        
D.
unable
【单选题】Woman: If the weather is this hot tomorrow, we may as well give up the idea of playing tennis in the afternoon. Man: Oh, I don't think it'll last long. The weather forecast says it will cloud over by ...
A.
Weather forecasts are not reliable.
B.
They'd better change their mind.
C.
The tennis game won't last long.
D.
They shouldn't change their plan.
【简答题】在下列情况下,测定结果是偏高、偏低,还是无影响?并说明其原因。(1) 在pH=4的条件下,用莫尔法测定Cl-;(2) 用佛尔哈德法测定Cl-既没有将AgCl沉淀滤去或加热促其凝聚,有没有加有机溶剂;(3) 同(2)的条件下测定Br-;(4) 用法扬斯法测定Cl-,曙红作指示剂;(5) 用法扬斯法测定I-,曙红作指示剂。
【判断题】白利度指含糖量的质量百分比。
A.
正确
B.
错误
【简答题】试述开环、闭环控制系统的主要区别和适用场合。
【简答题】在下列情况下,测定结果是偏高、偏低,还是无影响?并说明其原因(1)在pH=4的条件下,用莫尔法测定Cl-(2)用佛尔哈德法测定Cl-既没有将AgCl沉淀滤去或加热促其凝聚,有没有加有机溶剂(3)在(2)的条件下测定Br-
【单选题】在下列情况下,测定结果偏低的是
A.
在HCl介质中用K 2 Cr 2 O 7 测定铁
B.
用法扬斯法测定Cl - ,加入糊精
C.
用佛尔哈德法测定Br - ,即没有将沉淀滤去或加热促其凝聚,又没有加有机溶剂
D.
用莫尔法测定Br - ,轻轻摇动
【简答题】As he has been well trained,this young man is _____to be a teacher. A.delighted B.possible C.qualified D.unable
【判断题】No one paid any attention to this odd-looking man who might as well have been invisible. (Para. 2) Meaning: Cliff Young looked strange. His presence at the race drew everyone’s attention.
A.
正确
B.
错误
【简答题】Directions: There are three passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should ...
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