1.避蚊 若一次口服200毫克的维生素B_1可有效地避蚊2—3天。这是因为B_1代谢后从汗腺排出,蚊虫害怕这种气味,纷纷遁逃;蚊子喜欢暗色,害怕光亮,故夏天少穿红、蓝、黑色,多穿黄、白色衣裤,可减少蚊虫叮咬。 2.驱蚊 蚊子有昼伏夜出、趋光、趋声、趋味的特点。每天暮色降临时,打开窗户,不要开灯,蚊子就会从 1. A mosquito if an oral 200 mg of vitamin B_1 can effectively prevent mosquitoes 2-3 days. This is because B_1 excreted from the sweat glands after metabolism, mosquitoes are afraid of this smell, have fled; mosquitoes like dark, afraid of light, so less summer wear red, blue, black, wear yellow, white underwear, can reduce mosquito bites. Mosquito mosquitoes have nocturnal, phototaxis, tend to sound, taste characteristics. Twilight every day, open the windows, do not turn on the lights, mosquitoes will from