单项选择题

According to the passage, which of the following is not the factor determining the risk

A．the sate and type of asbestos
B．the choice of tools
C．ventilation of working environment
D．the medicine workers took
<上一题 目录 下一题>
热门 试题

单项选择题
According to the passage, which of the following factors could influence dust formation
A．humidity of asbestos that is used
B．the state and type of asbestos
C．ways people use asbestos
D．weather
单项选择题
Exposure to asbestos fibers can cause cancer______.
A．only when asbestos is used in building industry
B．only when it is used in large quantifies
C．even if it is used in small quantities
D．if they are used when wet rather than dry
相关试题