判断题

螺旋给料机是一种适用于干燥的粘度小的粉状料的给料设备

答案：正确

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Which is an example of a liability? ( )
A、The decision to borrow 10,000 from the operating line of credit on January 15, 2013.
C、Selecting the supplier to provide the raw materials for the manufacturing process.
D、Choosing the site for a future plant expansion from a list of several possible choices.

单项选择题

预防砷中毒时，错误的做法是：

A．妥善保管含砷杀虫剂（现已禁用）及含砷药物。
B．职业需接触砷时，做好职业防护并定期做职业健康检查。
C．锻炼自己的耐受能力，每天服用微量的砷。
D．在砷高污染地区，避免使用高砷水源，吸入高砷煤烟或食用砷污染的食品。