进行加油车制动测试(储气筒压力大于0.6MPa),连续全制动5次后,储气筒压力应保持在()以上。
A.0.1MPa
B.0.2MPa
C.0.3MPa
D.0.4MPa
参考答案:D
We are living in an age many things are done on computer.
A.which
B.that
C.whose
D.when
铁电陶瓷适合于高频下使用。()