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【判断题】
流动性、黏聚性和保水性三者既相互关联又相互矛盾，当流动性很大时，则往往黏聚性和保水性较差。A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】Definition of Resolution / Resolving Power
A.
It is based on the observation that two single-stranded nucleic acid molecules of complementary base sequence can form a double stranded hybrid.
B.
Technique whereby two different types of cells (from one organism or from different species) are joined to produce one cell with one, continuous plasma membrane .
C.
T he specimen is illuminated by a finely focused laser beam that rapidly scans across the specimen at a single depth, thus illuminating only a thin plane (or “optical section”) within the specimen .
D.
The smallest distance between two points on a specimen that can still be distinguished as two separate entities .
E.
They are made by identical immune cells from a unique parent cell .
【简答题】简述带传动的优点? 2 .链传动的主要失效形式有哪些?
【简答题】The maximum resolution, or resolving power (the ability to distinguish two points) of a compound light microscope is ______μm; maximum magnification is__________.
【单选题】After resolving the trouble of main power supply, main switch of emergency generator should____, if power supply is refreshed.
A.
be switched off by the duty officer
B.
be switched on by the duty officer
C.
be switched off automatically
D.
be switched on automatically
【单选题】After resolving the trouble of main power supply, main switch of emergency generator should ________, if the power supply is refreshed.
A.
be switched off by the duty officer
B.
be switched on by the duty officer
C.
be switched off automatically
D.
be switched on automatically
【简答题】Because the early microscopes lacked high resolving power, many species of ____________ were unknown.
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