【单选题】Stow the derricks ()before sailing.
【单选题】Before Chichester began his sailing, he was
【单选题】在正常情况下不表达 HLA II 类抗原的细胞是
【判断题】“有收无收在于水,收多收少在于肥”就是说肥料施用越多,产量越高。()
【简答题】One hour before sailing, the duty engineer and officer should check ______A. Tachometer and engine telegraph B. oil and water reserves C. clock and engine telegraph and test the rudder D. D. crews