正化学信号(positive chemical signal)
举一反三
- Which of the following cell signaling molecules does the neurotransmitter belong to? ( ) A: Chemical signal B: Gas molecules C: Optical signal D: Electric signal
- 下列属性描述中不属于信号属性的是() A: 带DELAYED(time)属性的信号 B: 带STABLE(time)属性的信号SIGNAL C: 带QUIET (time)属性的信号SIGNAL D: 带TRANSITION属性的信号SIGNAL
- 中国大学MOOC: 化学溶剂法Chemical solvent method()
- 1) ACS全名American Chemical Society,译为美国化学学会。( )
- 国际信号规则的英文名称是 (单选题) A: international signal regulation B: international code of signal C: international signal code D: the international code of signals