转子磁极挂装后,磁极键上端都()
A、搭焊
B、不搭焊
C、不一定搭焊
D、点焊
参考答案:C
.
With everything arranged properly, the project is surely to _________ smoothly as planned, step by step.
A.improve
B.increase
C.progress
D.occur
急性梗阻性化脓性胆管炎的主要致病菌是()
A.金黄色葡萄球菌
B.大肠杆菌
C.结核杆菌
D.白色葡萄球菌
E.溶血性链球菌