【判断题】轮齿式棘轮机构的棘轮上分布刚性的轮齿,轮齿大多分布在棘轮的外缘上,成为外接棘轮机构。
【判断题】成本低,见效快,个性化程度高是邮件促销的特点。
【判断题】成本低,见效快,个性化程度高是邮件促销的优点
【单选题】可以使用( )功能积木来控制每个角色出场的时间。
【单选题】A、B、C、D均为短周期元素。A、B可形成两种液态化合物B 2 A 2 、B 2 A,A与C仅形成两种气态化合物CA、CA 2 ,B可分别与A、C、D形成电子数相等的三种分子X、Y、Z,其中Y的空间结构是正四面体。则下列叙述正确的是 [ ]
B.
分子式为D 2 B 4 A 3 的物质水溶液呈碱性
C.
自然界中不会存在由A、B、C、D四种元素的组成的化合物
D.
A、B、C、D所形成的单质中,有上图所示的一种晶体结构
【单选题】Why did Cooley refer to some groups as “primary groups”?
A.
They are among the first groups we experience in life.
B.
They include more members than secondary groups.
C.
They sometimes only exist for a short period of time.
D.
Their members often consider group membership as a means to a goal.
【单选题】下列哪项原则的应用需要企业依赖职业判断,根据其所处的环境和实际情况,从项目的性质和金额大小两方面加以判断( )
【单选题】What is one advantage of establishing borders between different animal groups?
A.
The groups can patrol their borders constantly.
B.
The members of each group can spend time looking for food.
C.
Food can be shared among the different groups.
D.
Fighting between different groups can increas
【判断题】轮齿式棘轮机构的棘轮上分布刚性的轮齿,轮齿大多分布在棘轮的外缘上,成为外接棘轮机构。