混合气过浓,将会造成发动机()运转不良,有抖动,化油器有回火现象。
A.加速
B.减速
C.怠速
D.急加速
参考答案:C
—I’m sure I will get good grades (成绩) in this exam.
—If so, I believe your parents will ______ the result.
A.be satisfied with
B.be angry about
C.be bord of
D.be worried about
根据《SDH本地网光缆传输工程验收规范》,设备告警功能检查项目包括()
A.电源故障
B.信号丢失
C.帧失步
D.信号大误码
E.参考时钟失效