Payment T/T Shipping by DHL\UPS\Fedex\EMS\HK Post Condition New/Used Warranty 1 Year Application Communications Equipment Packaging Standard Exportation Packing Part number T8280 Lead time 2-4 Working Days Quality 100% Tested Packaging and delivery ...
Number name:RNC;Application:Telecommunication;Place of Origin:CN;GUA;Brand Name:ZTE;Model Number:ZTE;Type:W908-A10000;|Alibaba.com
为研究海洋常见重金属污染物Pb2+对杜氏盐藻种群数量增长的影响,研究人员配制了5种培养液(如下表所示),并将杜氏盐藻分别置于这5种培养液中培养(其他条件相同且适宜),定期取藻液测定杜氏盐藻密度,结果如图所示。请回答下列问题: 编号 培养液种类 A 1 L完全培养液+0 μg Pb2+ B 1 L完全培养液+10 μg Pb2+...
D、Pb2+不是细胞的必须元素,Pb2+对细胞具有毒害作用,D错误. 故选:D. 点评:本题的知识点是无机盐的作用,对无机盐作用的理解和运用无机盐的知识点解释生活中的生物现象是本题的重点. 练习册系列答案 一路领航核心密卷系列答案 同步题组训练与测评系列答案 ...
Application Communications Equipment Packaging Standard Exportation Packing Part number T8280 Lead time 2-4 Working Days Quality 100% Tested Packaging and delivery Selling Units: Single item Single package size: 100X100X100 cm Single gross weight: 50.000 kg Show more Lead timeKnow your supplie...