【单选题】探究实验因子与反应现象之间因果关系的一种科学研究方法是()
【单选题】求美者,女性,21岁,因“下巴后缩”要求整形。为了评估该求美者的颏部发育是否正常,叙述错误的是()
B.
使用Rickett审美平面,观察鼻尖、唇、颏部三点是否位于此平面上
C.
正面观,颏部长度的美学比例是上唇高∶下唇颏高=1∶1
D.
鼻底至口裂线∶口裂线至唇颏沟∶唇颏沟至颏下=1∶1∶1
【多选题】收车后的主要检视内容包括( )。
D.
检视车辆有无漏油、漏气、漏水、漏电第五章道路运输行车危险源辨识
【判断题】检查车轮作业中,需检查轮胎气压、外观状况、磨损情况等
【单选题】A principal criterion for the diagnosis of meningitis due to Neisseria meningitidis is ( ).
A.
Observation of acid-fast rods in the spinal fluid.
B.
Gram-negative cocci, arranged in pairs, in the spinal fluid.
C.
Gram-negative rods in the spinal fluid.
D.
Observations of mycoplasmas in the spinal fluid.
E.
Gram-positive rods in the spinal fluid.
【简答题】Which of the following does not belong to Prokaryotic
microorganisms ?A. bacteria B. mycoplasmas C. chlamydiae D. prion
【判断题】.检查轮胎作业中,需检查轮胎气压、外观状况、磨损情况等。( )
【单选题】Antibiotics are mostly produced by