电子点火系的二次侧电压较高,主要原因是()
A.火化塞间隙大
B.点火线圈性能好
C.高压线不易漏电
D.一次侧电流大
参考答案:D
The reason ______he was late was _____he got up late
A.which , because
B.why , that
C.that, that
D.why ,because
下列哪项不属于胃液的成分
A.盐酸
B.胃蛋白酶原
C.内因子
D.组胺
E.黏液