在设计计算各机构零部件时，应根据各机构的工作级别（）进行。
A、同时
B、分类
C、相互
D、分别
参考答案：D
The combination of parties to form a new government tried out to be
______ failure, but as we know, success often comes from _____ failure．
A．a; a
B．/; /
C．a; /
D．/ ; a
