logo - 刷刷题
下载APP
【单选题】

在S700K转辙机中,齿轮组是().

A.
第一级
B.
第二级
C.
第三级
D.
第四级
题目标签:轮组齿轮
举报
参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】Passage 3 Questions 11 to 15 are based on the following passage: Scientists in India have invented a new way to produce electricity. Their invention does not get its power from oil, coal or other fuel...

A.
Because bullocks have long been used by Indian people
B.
Because bullocks walk slowly and are easy to control.
C.
Because there are few non-working bullocks in India
D.
Because there is not enough oil in India.