测定酸值所用的微量滴定管最大容量为2mL或5mL,在规定试油量时所消耗的氢氧化钾乙醇溶液的体积,以不超过()为宜。
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TSH(促甲状腺素)是由甲状腺分泌的,受体内血浆甲状腺激素浓度反馈的影响。
A. 正确
B. 错误
为了保证静态保护装置本题的正常运行,最高的周围环境温度不得超过()度。
A. 30
B. 35
C. 40
In evacuation from a ship,an individual without the option of a survival craft or liferaft should enter the water on the leeward side,except when().
A. there is burning oil on the water
B. there is a rescue craft in the area
C. water temperature is below 40°F
D. a rigid survival craft is in the area