关于变速箱的OSC功能,以下哪些说法不正确()
A.检查电磁阀的线路状态
B.检查传感器的线路
C.OSC换档要符合车速要求
D.检查执行元件的工作状态
参考答案:A
There are so many tall trees in the forest,______________.
A.some of them measures over 50 meters
B.some of which measuring over 50 meters
C.some of them measuring over 50 meters
D.some of which measures over 50 meters
某同学欲用三种方法配制100g溶质质量分数为10%的食盐溶液,请你与他共同完成下列各题:
(1)取______ g固体食盐溶于______g水中,配制过程中需用到的仪器有______.
(2)向50g20%的食盐溶液中加水______g 充分溶解即得.
(3)分别取______g 15%的食盐溶液与______g 5%的食盐溶液混合均匀即可.