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【多选题】
影响曝光量三要素是( )
A.
光圈大小
B.
快门速度
C.
镜头焦距
D.
感光度
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【单选题】用c(HCl)=0.1mol/LHCl溶液滴定c(NH3)=0.1mol/L氨水溶液化学计量点时溶液的pH为()。
A.
等于7.0
B.
小于7.0
C.
等于8.0
D.
大于7.0
【单选题】室间隔缺损伴有肺动脉高压
A.
动脉血氧含量降低
B.
血氧容量降低
C.
两者均有
D.
两者均无
【单选题】The most energetic and important festivals are ______ that look forward_____ the end of winter and to the coming of spring.
A.
ones; in
B.
the ones; /
C.
onesto
D.
the ones; to
【单选题】用c(HCl)=0.1mol/LHCl溶液滴定c(NH 3 )=0.1mol/L氨水溶液化学计量点时溶液的pH为( )。
A.
等于7.0
B.
小于7.0
C.
等于6.0
D.
大于7.0
【判断题】纯金属比合金的塑性好,变形抗力小,因此纯金属比合金的锻造性差。
A.
正确
B.
错误
【单选题】The writer thinks the most important use of the laser is in the field of______.
A.
medical treatment
B.
national defense
C.
space travel
D.
metrology
【判断题】Loading-buffer 的中文名称是凝胶加样缓冲液。
A.
正确
B.
错误
【简答题】《人间喜剧》是如何串联起来的?
【单选题】The passage suggests that______.
A.
most people don't realize how important passports are
B.
passports aren't important once you are in the country you've chosen to visit
C.
passports are simple to obtain through the mail
D.
passports are obtained at the embassy once you enter a country
【单选题】用c(HCI)=0.1mol/LHCI溶液滴定c(NH3)=0.1mol/L氨水溶液化学计量点时溶液的PH为( )
A.
等于7.0
B.
小于7.0
C.
等于8.0
D.
大于7.0
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