单机_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题名词解释

单机

答案

参考答案：指未挂车辆在线路上运行的机车，准许顺路机车连挂车辆运行即单机挂车。

填空题

所有绝对值小于4的整数的积是______，和是______．

单项选择题

Questions 14-23

·Look at the ten statements for this part.
·You will hear a passage about "the number of genes ". You will listen to it twice.
·Decide whether you think each statement is right(R), wrong(W) or not mentioned(NM).
·Markyour answers on the Answer Sheet.

Both of the two competing teams of scientists found that humans have about the same number of genes as some insects.

A．Right

B．Wrong

C．Not Mentioned