Which of the followings is not an indication of a bad maintenance?（） a pipe with welded connections。 a pipe with several clips。 a cement box。 a leaking valve。
In deciding to detain a ship or not, the PSCO would better not（） make his decision independently。 request the owner’s representative to provide proposals。 cooperate with the flag State Administration’s representatives。 consult the organization responsible for issuing the relevant certificate。
市场调研应考虑哪些因素？
If the PSCO has clear grounds for carrying out a more detailed inspection,（） the master should be immediately informed。 the master will be prohibited from contacting the Administration or other organization。 he will carry out the inspection after the master be informed and be ready。 he will carry out the inspection without informing the master。
车辆信息控制装置的公里里程计数范围-1000～+1000km。
下列关于顶级客户维护的说法错误的是（）。
