多选题\n What are the three main SNARE proteins?A、 Synapsin, SNAP-25, synaptotagminB、 SNAP-25, syntaxin and synaptobrevinC、 Synapsin, synaptobrevin and synaptotagminD、 SNAP-25, synaptotagmin, synaptobrevin\n多选题\n What is the size of the primary structure of K+ channels compared to Na+ channels?A、 It is twice the size.B、 It is half the size.C、 It is four times the size.D、 It is one quarter the size.\n多选题\n Which protein is the Ca2+ sensor in synaptic transmission?A、 SynapsinB、 Munc18C、 SynaptobrevinD、 Synaptotagmin\n多选题\n Which channel did Drosophila shaker gene encode?A、 Voltage-gated Na+ channelB、 Ligand-gated Na+ channelC、 Voltage-gated K+ channelD、 Ligand-gated K+ channel\n