请注意：表单元素的类型是具有三个不同选项的下拉列表，如图2 所示
Note that the form element Type is a drop-down list with three different choices, as shown in Figure 2
这个选项选择类型的电控单元，用户会尝试连线。
This option selects type of ECU that user will try to connect.
这个选项选择类型的电控单元，用户会尝试连线。
This option selects type of ECU that user will try to connect.
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