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【单选题】
四环素类的抗菌机理是()。
A.
抑制细菌核酸代谢
B.
抑制细菌细胞壁的合成
C.
抑制细菌蛋白质的合成
D.
抑制细菌DNA的合成
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【单选题】题干: 机帆并用的船舶,在白天应在船的前部最易见处悬挂一个:
A.
悬挂尖端向上的圆锥体
B.
悬挂一个菱形体
C.
悬挂尖端向下的圆锥体
D.
悬挂一个圆柱体
【简答题】A controversy erupted in the scientific community in early 1998 over the use of DNA(deoxyribonucleic acid ) fingerprinting in criminal investigations. DNA fingerprinting wasintroduced in 1987 as a met...
【单选题】What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?().
A.
Bends in the piping
B.
Slowing the pumping rate
C.
Pipeline valves
D.
Backing rings for pipe welds
【简答题】A controversy erupted in the scientific community in early 1998over the use of DNA(deoxyribonucleic acid)fingerprinting in criminal investigations.DNA fingerprinting was introduced in 1987as a method ...
【单选题】The liquid flowing in the capillary is such that the difference in _____ readings taken before the capillary and after it is related to the oil viscosity.
A.
pressure
B.
velocity
C.
flow rate
D.
temperature
【单选题】There is strong evidence that the of a father increases the probability that a youngster will use drugs and engage in criminal activity.
A.
absence
B.
disappearance
C.
attention
D.
concern
【单选题】Controversy erupted in the scientific community in early 1992 over the use of DNA (deoxyribonucleic acid)fingerprinting in criminal investigations. DNA fingerprinting was introduced in 1987 as a metho...
A.
some blood of the suspect
B.
prints of the suspect's fingers
C.
hairs or blood found at the scene of the crime
D.
both A and C
【单选题】When a liquid wets a solid completely,the contact angle between the liquid and the solid is( )
A.
B.
45°
C.
90°
D.
135°
【单选题】破伤风患者换药后污染的敷料宜采用灭菌方法为( )
A.
焚烧
B.
干烤
C.
烧灼
D.
紫外线照射
【单选题】下列不属于五行相克关系传变的是
A.
土虚木乘
B.
木火刑金
C.
土虚水侮
D.
水不涵木
E.
木旺乘土
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