【单选题】—Thanks for lending me the electronic dictionary. ______ it be put here? —Yes, you may put it here just as well. [ ]
【单选题】(10 滨州) 下列实验操作中错误的是
A.
.实验室制取气体,要先对装置的气密性进行检查
【简答题】下列实验操作中错误的是( ) A.实验室制取气体,要先对装置的气密性进行检查 B.可燃性气体点燃前必须检验其纯度 C.给玻璃器皿加热时都需垫上石棉网 D.实验产生的废液就倒入指定的容器内
【单选题】良性淋巴结的声像图特点是 ( )①淋巴结均匀性肿大,长(L)/宽(S)>2②淋巴结分叶状增大,长(L)/宽(S)0.7
【单选题】ff you don't agree with me, feel free to ______ your own proposals.