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【单选题】
普通小功率硅二极管的正向导通压降约为____;A.
0.1～0.3V
B.
0.6～0.8V
C.
小于1μA
D.
大于1μA
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【单选题】关于前置胎盘所致的阴道出血，其特点是（ ）
A.
破膜后出血常能减少甚至停止出血
B.
阴道流血时间的早晚与前置胎盘类型无关
C.
多发生在出现宫缩以后
D.
多发生在孕36～40周时
E.
胎盘附着的子宫下段有明显出血
【简答题】捷进2 Unit 5 P.82 Look at the pictures of some foods. Guess and match the foods tothe countries they are typically eaten in. Check your predictions after reading the text.A. B. C. D. E.
【简答题】田螺属于______纲动物，牡蛎属于______纲动物，乌贼属于______纲动物。
【简答题】同受国家控制的企业之间发生的合并，应作为同一控制下的企业合并。( )
【简答题】Healthy Eating Today, on the street, there seem to be more and more children who look very fat. Perhaps they grow fat because they eat too much a day. But this may not be the whole story. Another fact...
【简答题】听一段录音,根据录音完成以下空白,每空仅填一个单词。 Breakfast is the first meal of the day. Some people love it! They look __1___ to __2___ their ___3____ fast with a big meal. Others may like to eat something small. For thos...
【单选题】The author advises consumers to______.
A.
look for foods with such words as 'certified organically grown'
B.
grow their own food without synthetic chemicals
C.
buy foods from a seller they often deal with
D.
make sure the foods are pesticide free before buying them
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