【单选题】According to the passage, insect societies______.
A.
are governed by the instincts of insects
B.
are not fundamentally different from human societies
C.
are composed of individuals of the same type
D.
are as not warlike as human beings
【简答题】Why is an insect erous when it is wetted by liquid? It is because of ______.
【单选题】柴油机发生燃烧敲缸的原因包括______.I喷油器针阀卡死在开启位置II气缸超负荷III轴承间隙过大IV起动初期气缸温度太低V气缸磨损过大VI喷油定时过晚
【单选题】There's ____ insect in the tree. [ ]
【简答题】某原电池的一个半电池是由金属银浸在1.0mol·dm -3 Ag + 溶液中组成的,另一半电池是由银片浸在c(Br - )为1.0mol·dm -3 的AgBr饱和溶液中组成的。后者为负极。测得电池电动势为0.728V。试写出相关反应式。
【单选题】奶糖的糖分测定时常选用( )作为澄清剂 。( )