【判断题】在光镜下观察肝组织切片时,可见肝小叶中央有一血管,称作中央动脉。
【单选题】Which one doesn’t belong to deck machinery?
【单选题】These include deck machinery such as mooring equipment, anchor handling equipment, cranes and _____.
【判断题】把被保护的主体金属和直流电源的负极连接,外加电流使金属阴极化,从而提高金属稳定性的方法就是阳极保护法
【单选题】Mechanical gearing of deck machinery such as the windlass or boat hoists should().
A.
be open to view so,if a foreign object gets in the gearing,the operator can immediately stop the machinery
B.
have a guard over the gearing
C.
be painted a contrasting color from the base color in order to call attention to the gearing
D.
not be operated if there is any crew within 10 feet of the machinery
【单选题】针对讲究身份、地位的客人设计的报价方式是( )。