液压回油滤清器工作（）h清洗一次。A、400h B、500h C、600h

---Sorry, Ted, I can’t come to your party.

--- That’s too bad. Maybe _____ time.

A．the other

B．other

C．others

D．another

__________at the gate of the theater, Susan found the ticket for the play was left at home.

A．To arrive

B．On arriving

C．As arriving

D．While arrived

局麻药加入肾上腺素的主要目的在于（）

A.提高血压

B.减慢麻醉剂吸收速度

C.防止手术野渗血

D.增高对局麻药的耐受性

E.对抗麻醉剂过敏性

He got on well _____ his neighbours.[ ]

A. at

B. with

C. in

D. of

左前轮正的主销后倾角可以调节得比右前轮正的主销后倾角稍大，以补偿路拱的影响。