【单选题】双孔式电磁阀喷油器的头部装有双口分流套的作用是( ) 。
【单选题】Merchant vessels are operated in two ways. The two types are ( ).
C.
Tramps and container vessels
【简答题】我国古代蹴鞠运动最为兴盛的朝代 有哪些?表现形式有哪些?
【单选题】肛门内括约肌与外括约肌的皮下部交界处称之________。
【单选题】There shall be two principal ______ through the harbor for the passage of vessels of over 60 tons burden.
【单选题】69 双孔式电磁阀喷油器的头部装有双口分流套的作用是( )。
【单选题】Two vessels are meeting head-on. How must the vessels pass?
A.
One vessel must alter course while the other must continue on its course.
B.
The vessels should determine which will alter course by sounding whistle signals.
C.
Both vessels should alter course to port and pass starboard to starboard.
D.
Both vessels should alter course to starboard and pass port to port.