丽丽买东西应付15元,售货员阿姨找给丽丽5元,你知道丽丽给售货员阿姨的会是一张面值是多少的人民币?
15元+5元=20元
连杆螺栓结构特点有()。
Ⅰ.螺纹多为精加工细牙螺纹
Ⅱ.杆身最小直径应等于或小于螺纹内径
Ⅲ.杆身最小直径应大于螺纹内径
Ⅳ.采用耐疲劳柔性结构
Ⅴ.螺帽应有防松装置
Ⅵ.杆身为等截面圆柱体
A.Ⅱ+Ⅲ+Ⅴ+Ⅵ
B.Ⅰ+Ⅱ+Ⅳ+Ⅴ
C.Ⅲ+Ⅳ+Ⅴ+Ⅵ
D.Ⅰ+Ⅱ+Ⅴ+Ⅵ
It is well-known that the retired workers in our country are ______ free medical care.
A.entitled to
B.involved in
C.associated with
D.assigned to