进入发电机定子膛内工作时，任何人员一律穿专用（），不得有纽扣和金属拉锁.
参考答案：连体服
These animals are all used to their environment,______, they have learned how to live successfully in their habitat．
A．however
B．for instance
C．what’s more
D．or rather
三相负载作Y连接时，只要有了中性线，就不会发生中点位移的现象。（）
