制动缸行程的调整,D2、D2G型车通过调整下拉杆组成的长短的的变化调整制动缸的行程长短,将下拉杆组成变长时,制动缸行程变短。反之则变长,但下拉杆组组成的最大调整长度不大于()mm;(长大货物车)
A. 880
B. 900
C. 920
D. 940
ActiveX控件是指一些遵循MicroSoft ActiveX技术规范的可执行的代码。
A. 正确
B. 错误
送电线路与弱电线路交叉时,对一级弱电线路的交叉角应大于()。
A. 30°
B. 45°
C. 60°
D. 65°
Although () primarily to promote trade relations, these agreements also foster technological cooperation.
A. designed
B. they are to be designed
C. it is designed
D. they are being designed