【单选题】( )
C.
Concurrency structures
【单选题】会阴部被踢伤后,有会阴部疼痛和排尿痛,无排尿障碍,查体:会阴部有压痛,无肌紧张,尿中红细胞满视野,考虑为
【判断题】在均匀电场中,空气间隙的击穿电压与电压波形、电压作用时间有关。()
【判断题】在均匀电场中,空气间隙的击穿电压与电压波形、电压作用时间无关。( )
【单选题】Why internal secondary structures are not preferred for primers? __________
A.
Internal structures are very bulky and thus elongation is not preferred
B.
Because of it, primer may fold back on itself and won’t be available for template
C.
Internal secondary structures require more amount of template
D.
If internal structures are present, no proof reading would be observed
【判断题】3岁前学前儿童大多是在成年人陪伴下进行活动的,所以交际多采用对话形式