自诊系统
参考答案：
利用电控单元对电控装置各部件进行检测和诊断，可以自行找出存在的故障，被称为“自我诊断系统”，简称“自诊系统”。
It is in Steven Spielberg’s first film , Jaws ,_____a big white shark attacks swimmers ____are spending their holidays in a small village by the sea. .
A．where, who
B．which, that
C．that, that
D．where, that
背斜构造区的煤与瓦斯突出危险性比向斜构造区的突出危险性要大得多。
