在RT-flex型电控柴油机中,伺服油共轨中的压力通常为()。
A.0.7MPa
B.3.0MPa
C.20MPa
D.0.7~0.8MPa
参考答案:C
电力高技能人才培训项目按照什么样的机制运作?
If we throw away too much waste and can’t keep good ecosystem,we _________ our future.
A.must have destroyed
B.could be destroying
C.may be destroying
D.must destroy