()的肝脏再生能力强,切除1/3的肝组织,仍有再生能力,适合做肝外科实验。
A.小鼠
B.大鼠
C.猫
D.地鼠
E.兔
参考答案:B
The computer was used in teaching.As a result,not only ________,but students became more interested in the lessons.
A.saved was teachers' energy
B.was teachers' energy saved
C.teachers' energy was saved
D.was saved teachers' energy
对自驾伺服作动器电液伺服活门功能描述正确的是()。
A.控制流进伺服的液压通断
B.根据A/P指令控制伺服阀分配液压
C.探测舵面位置
D.探测伺服液压