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【判断题】
嗜盐菌细胞膜的紫色部分(紫膜)在膜上呈斑片状(直径约0.5 mm)独立分布,其总面积约占细胞膜的一半,主要由细菌视紫红质组成。A.
正确
B.
错误
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【简答题】Task 2 (10 points) Directions: In this task there is a passage followed by an incomplete outline. You should read the passage carefully and fill in each blank with no more than three words . 阅读文章,然后填空...
【简答题】在用光学平直仪和精密水平仪测量机床导轨的直线性误差时，可用（）法或（）法求得误差值。
【单选题】What can we assume about photographers in the 1800s?
A.
Most of them had originally been painters before they became interested in photography.
B.
Portrait photographers were in the highest demand since people wanted images of their families.
C.
There were only a few photographers who were willing to work in such a new profession.
D.
Some of them must have experienced health problems as a result of their laboratory work.
【简答题】Task 4 Fill in the blanks in the following sentences with the words given in the box. Change the form where necessary. enthusiastic defensive strategy motivate figure out caution pros and cons hook ou...
【简答题】Fill in the blanks in the following sentences with the words given in the box. Change the form where necessary. enthusiastic defensive strategy motivate figure
out caut...
【单选题】What point is Susan making in the final paragraph?
A.
It's essential to find the time to paint even if there is gardening to be done.
B.
It's important not to leave the gardening entirely to other people.
C.
It's good to have expert help when you grow plants.
D.
It's hard to do exhibitions if there are not enough plants ready in the garden.
【简答题】在用光学平直仪和精密水平仪测量机床导轨的直线度误差时，可用哪两种方法求出误差？
【简答题】Fill in the blanks with words or phrases from the box below.Change the form where necessary. Pursuit folk motivation be big on all the way takeover elementary hook predict 1 . I'm a tech fan and _____...
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