如图所示,(a)被测物体的质量是________g;(b)速度表的读数是_________km/h;(c)电流表的读数是_________A。
151.4,80,2.6
It was only when I reread his poems (诗) recently _____ I began to appreciate their beauty.
A.until
B.that
C.then
D.so
类的析构函数的作用是
A.一般成员函数的初始化
B.类的初始化
C.对象的初始化
D.删除类创建的对象