【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】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?
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?
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