对于具有6个气缸的发动机，（）缸磨损最大。
A.1
B.2
C.3
D.5
参考答案：A
This summer North China was attacked by such a terrible heat few people has ever experienced before.
A．that
B．and it was
C．which
D．as
我行设定的保险公司核保时间最大为（）秒，如果系统核保超时，请重新发送。
A.2
5B.10
C.30
