【单选题】Who are the speakers talking about?
【单选题】阀控型液压起货机电气操纵机构的控制对象是()换向节流阀。
【单选题】17阀控型液压起货机电气操纵机构的控制对象是 换向节流阀
【单选题】Who are the speakers?
A.
Salesman and customer.
B.
Manager and secretary.
【单选题】Who are the speakers?
B.
b. Senior students at college.
C.
c. Beginners in English study.
D.
d. Non-English majors at college.
【单选题】Who are the speakers?
B.
senior students at college
C.
beginners in English study
D.
non-English majors at college
【单选题】Who are the speakers?
A.
Waitress and customer.
C.
Shop assistant and customer.
【单选题】Who are the speakers?
A.
A Student and a teacher.
B.
An interviewer and clerk.
C.
A student and a president.
D.
An employer and an employee.
【单选题】Who are the speakers?
【单选题】阀控型液压起货机电气操纵机构的控制对象是什么换向阀