【单选题】Beijing is full of () in summer.
【单选题】目前包括应用船舶电力推进系统等大型船舶采用( )供电系统,船舶电力系统中都采用( )变压器。
【单选题】(1512-84)TreeNode接口中的( )方法判断接收者是一个叶子节点。
【多选题】(1512-84)关于Java树组件,描述正确的是( )。
B.
树组件在javax.swing.tree包中
D.
MutableTreeNode是TreeNode子接口
E.
DefaultMutableTreeNode 是MutableTreeNode接口的实现类
【多选题】下列不属于食物中毒的是
D.
食入正常数量可食状态的有毒食物引起的急性胃肠炎
【单选题】My hometown lies ___ the city. ___ I often go to the city by bike. [ ]
A.
50 miles in the east; However
B.
to the east 40 miles of; But
C.
in the east 45 miles from; But
D.
35 miles east of; However