卡套式管接头是靠（）的压紧力实现连接和密封的，所以也叫压接接头。
参考答案：圆环形卡箍
______ Kitty ______ Cathy is going with you because one of them must stay at home.
A．Not only; but also
B．Neither; nor
C．Both; and
D．Either; or
保险标的危险程度增加，被保险人未履行通知义务的，保险人减少赔偿责任。( )
