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【单选题】
关于透射电镜切片不正确的说法是A.
电镜所使用切片的厚度范围在50~100nm之间
B.
电镜所使用切片厚度比普通光镜薄
C.
电镜所使用切片常被封装于载玻片上用于观察
D.
电镜所使用切片必须置于高真空状态才可以观察
E.
用于切片的样本必须经严格脱水和用单体树脂包埋
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【单选题】某外贸进出口公司进口一批小汽车,到岸价格折合人民币为1000万元,缴纳进口关税税额900万元,则该公司应纳进口增值税为( )万元。(小汽车消费税税率9%)
A.
351.09
B.
170
C.
352.78
D.
354.95
【简答题】请说出图中该产品的生命周期特点?并说明该产品是否为好产品?
【单选题】If you had listened to the doctor, you _________ all right now.
A.
are
B.
were
C.
would have been
D.
would be
【简答题】请说出图中该产品的生命周期特点?并说明该产品是否为好产品?
【单选题】听力原文：W: Did you go see the doctor about your cough? M: The doctor said if I keep smoking it will increase my chance of having a heart attack or lung disease. And I am thinking about quitting smoking a...
A.
He has had a heart attack because of smoking.
B.
He has serious lung disease.
C.
He is coughing because of too much smoking.
D.
He will go to see a doctor about his coughing.
【单选题】听力原文：W: Did you go to see the doctor about your cough? M: The doctor said if I keep smoking it will increase my chance of having a heart attack or, lung disease. And I am thinking about quitting smoki...
A.
He will go to see a doctor about his coughing.
B.
He has had a heart attack because of smoking.
C.
He is coughing because of too much smoking.
D.
He has a serious lung disease and heart attack already.
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