()接近法实际上是把产品示范过程戏剧化,可增加对顾客的吸引力,使之产生兴趣,为推销会谈铺平道路。 聊天。 好奇。 表演。 鼓励。
对于居民小区的地下车库,一般情况下天线覆盖半径() 5-10m。 10-15m。 15-20m。 20-25m。
光合作用碳反应中固定CO2的步骤由简称为RubiSCO的酶负责催化进行。RubiSCO的活性受多种因子的调控。有研究显示,叶绿体基质内的氢离子浓度降低与镁离子浓度提升,能促进该酶的活性;此外,在黑暗中,叶肉细胞会持续生成RubiSCO抑制分子,但在光照下,该抑制分子会分解而失去其作用。根据以上材料,下列说法正确的是()
什么船是油船?
At sea,you are approaching a small vessel and see that it has the signal flag P hoisted. What should you do?(). Proceed on present course and speed since the vessel is stopped and making no way through the water。 Keep clear of the vessel because it has a diver down。 Attempt to call the vessel on VHF radiotelephone because someone on board requires medical assistance。 Approach with caution because the vessel is a fishing vessel and its nets are fouled on an obstructio。
车间生产现场产生的硫化氢和二硫化碳气体通过排风排入()