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【简答题】
我国规定车间空气中毒物或粉尘的容许接触限值的上限浓度,即在多次有代表性的采样测定中均不应超过的数值( mg/m 3 ),工人在该浓度下长期进行生产劳动,不致引起急性或慢性职业性危害的浓度。 必须指出的是, 不是一成不变的,随着科技的进步,有关毒理学和工业卫生学燃料的积累,并结合毒物接触者健康状况观察的结果,会不断修订完善。
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】HDL的功能是
A.
从肝内运输胆固醇到外周组织
B.
从肝内运输磷脂到外周组织
C.
从肝内运输甘油三酯到外周组织
D.
从外周组织运输胆固醇到肝内
E.
从肝内运输FFA到外周组织
【判断题】建筑工程项目中建筑材料费占工程成本的80%，应合理地组织建筑材料的计划、供应与使用，保证建筑材料从生产企业按品种、数量、质量、期限进入建筑工地。( )
A.
正确
B.
错误
【简答题】The election of Kennedy as the president of America is not a victory of party but a celebration of_____________.
【单选题】Though he was very excited about being elected as the president of the student association,many extra responsibilities have been him ever since then .
A.
looked upon as
B.
thrust upon
C.
distinguish between
D.
make sense
【单选题】Since he was elected as the president of the student association, many extra responsibilities have been ______ him.
A.
took away from
B.
looked upon as
C.
thrust upon
D.
equipped with
【单选题】The company decided to _______ a Spanish manager as the president of the company.
A.
appoint
B.
chart
C.
retail
D.
coerce
【单选题】He was elected as the president of the student union, so many extra responsibilities have been ________ him.
A.
reminded of
B.
freed of
C.
thrust upon
D.
accustomed to
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