汽车检测设备包括汽车发动机检测诊断设备。
参考答案:错
---May I speak to Mr. Smith?
--- He __________. Can I ______ a message?
A.is sleeping, take
B.will sleep, take
C.sleeps, bring
D.is sleeping, get
6502电气集中电路中LXJ的缓放作用有哪些?