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【单选题】
液压传动中的功率P可以用( )的乘积来表示。
A.
压力p和速度v
B.
速度v和流量q
C.
压力p和流量q
D.
前三者都不是
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参考答案:
举一反三
【单选题】Most people are aware that, ____ , the relationship between Hong Kong and the Republic of the Philippines will become poorer.
A.
if not dealing with carefully
B.
if dealt not carefully with
C.
if not carefully dealt with
D.
if not carefully dealing with
【单选题】The following are the founding fathers of the American Republic except ______.
A.
George Washington
B.
Thomas Jefferson
C.
Willian Penn
D.
Benjamin Franklin
【单选题】分别用浓度 c ( NaOH )为 0.10mol/L 和浓度 mol/L 的两种溶渡滴定相同质量的 KHC 2 O 4 ·H 2 C 2 O 4 ·2H 2 O ,则滴定消耗的两种溶液的体积( V )关系是:( )。
A.
V ( NaOH ) =V ( KMnO 4 )
B.
5V ( NaOH ) =V ( KMnO 4 )
C.
3V ( NaOH ) =4V ( KMnO 4 )
D.
4V ( NaOH ) =3V ( KMnO 4 )
【简答题】下列哪项不是有氧运动的特点:( ) A人体在氧气充分供应的情况下进行的运动训练 B通常指达到50-80%的最大摄氧量(Vo2max)的运动训练 C强度低、有节奏、持续时间长 D慢跑、滑冰、游泳、骑自行车、跳健身舞等属于有氧运动 E通常指大于80%的最大摄氧量(Vo2max)的运动训练。
【单选题】根据中性进化理论,每种生物的信息大分子都有一定的进化速率。血红蛋白的氨基酸每年按照多少的速率发生置换?
A.
10 -7
B.
10 -8
C.
10 -9
D.
10 -10
【判断题】northern ireland today is governed by separate jurisdictions:that of republic of ireland and that of great britain. ()
A.
正确
B.
错误
【判断题】急性肾功能不全时,肾毒性损伤的特点是肾小管上皮细胞与基膜均受损。
A.
正确
B.
错误
【单选题】What is the Republic of Ireland called in Irish?
A.
Irea
B.
Aire.
C.
Eare.
D.
Eire.
【判断题】ireland is a republic with a government headed by a prime minister,elected directly by the people. ()
A.
正确
B.
错误
【单选题】Which side first made gestures to return to talks according to the news?
A.
The Republic of Korea.
B.
The Democratic People’s Republic of Korea.
C.
India.
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