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[单选] The forced draught fan should be started and air passed through the furnace for several minutes to “()” it of any exhaust gas or oil vapors.

A . blow
B . clean
C . scavenge
D . purge

班组级安全生产片培训主要内容包括()。 岗位安全操作规程。 生产设备和安全装置。 劳动防护用品(用具)的性能及正确使用方法。 事故案例。 中餐宴请必讲“色、香、味、形、器”,其中。器”是指()。 炉具。 餐具。 酒具。 餐巾。 A katabatic wind blows(). up an incline due to surface heating。 in a circular pattern。 down an incline due to cooling of the air。 horizontally between a high and a low pressure area。 学校心理健康教育的基本途径是() 心理咨询。 心理辅导。 心理健康教育课程。 全面渗透。 A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT(). higher than normal swells。 high winds。 winds veering from south,through west,to northwest。 light shower。 The forced draught fan should be started and air passed through the furnace for several minutes to “()” it of any exhaust gas or oil vapors.
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