皮皮学，免费搜题
登录
搜题
【单选题】
大多数犬的VHS正常范围是A.
10.3-12.3
B.
9.9-12.9
C.
8.2-11.2
D.
7.6-9.6
E.
8.5-10.5
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】What is human retrotransposon L1 element?
A.
One abundant human retrotransposon, the L1 element (sometimes referred to as LINE-1, a long interspersed nuclear element), is transcribed into RNA by a host cell’s RNA polymerase.
B.
A double-stranded DNA copy of this RNA is then made using an enzyme called reverse transcriptase, an unusual DNA polymerase that can use RNA as a template.
C.
The reverse transcriptase is encoded by the L1 element itself.
D.
The DNA copy of the element is then free to reintegrate into another site in the genome.
【单选题】(2006年)一逆流套管式水一水换热器，冷水的进口温度为25℃，出口温度为55℃，热水进口温度为70℃，若热水的流量是冷水的2倍，且物性参数不随温度变化，与此换热器的对数平均温差最接近的数据为( )℃。
A.
15
B.
20
C.
25
D.
30
【单选题】一逆流套管式水-水换热器,冷水的进口温度为25°C,出口温度为55°C,热水进口温度为70°C,若热水的流量是冷水的2倍,且物性参数不随温度变化,与此换热器的对数平均温差最接近的数据为:
A.
15℃
B.
20℃
C.
25℃
D.
30℃
【简答题】What element is quite helpful in pring a place from getting warmer in higher latitudes?
【单选题】If the number of electrons in an element increases, what do we form?
A.
an isotope
B.
a cation
C.
a new element
D.
an anion
E.
an allotrope
【单选题】(2008年)一逆流套管式水一水换热器，冷水的出口温度为55℃，热水进口温度为70℃。若热水的流量与冷水的流量相等，换热面积和总传热系数分别为2m2和150W／(m2．K)，且物性参数不随温度变化，则与该换热器的传热量最接近的数据( )W。
A.
3500
B.
4500
C.
5500
D.
6500
【单选题】What is the essential element in the dynamics of social influence?
A.
The eagerness to be accepted.
B.
The impulse to influence others.
C.
The readiness to be influenced.
D.
The inclination to rely on others.
【单选题】What is not the element in defining language?
A.
systemic
B.
arbitrary
C.
symbol
D.
visual
【简答题】What element will help fight against age spots and wrinkles? ______________________________.
【简答题】What does the man say about an element of stress in his job?
相关题目：