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【单选题】
下列哪一种疾病不属于遗传病( )A.
、感冒
B.
、白化病
C.
、血友病
D.
、色盲 www .Xkb1.coM
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举一反三
【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】（本题满分10分） (1) 化简 （4分） (2) 求函数 的定义域和值域.（6分）
【简答题】、(本小题满分14分) 设函数 ，其中实常数 。 (1)求函数 的定义域和值域； (2)试探究函数 的奇偶性与单调性，并证明你的结论。
【单选题】The resolving power (limit of resolution) of the light microscope is:
A.
2 mm
B.
2 μ m
C.
0.2 mm
D.
0.2 μ m
E.
0.02 mm
【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】What is the maximum resolving power seen with a light microscope?
A.
2 centimeters
B.
2 millimeters
C.
2 nanometers
D.
2 micrometers
E.
2 angstroms
【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
【简答题】Because the early microscopes lacked high resolving power, many species of ____________ were unknown.
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