Question

一.单选题(共20题,共40分)
35.which of the following is correct when testing low - voltage circuits that require live operation? (2分)
oa.two - hand operation is safer than one - hand operation
ob. one - hand operation is safer than two - hand operation
oc. one - hand operation is as safe as two - hand operation
od. operation is related to air humidity

Explanation:

When testing low - voltage circuits that require live operation, one - hand operation is safer. This is because if there is an electric shock, one - hand operation reduces the risk of current passing through the chest (a more dangerous path for the body compared to some other scenarios). Two - hand operation may potentially create a more dangerous current path through the body. And operation safety in this context is mainly related to the operation method rather than air humidity.

Answer:

B. One - hand operation is safer than two - hand operation