【多选题】观赏鱼的饲喂时我们要遵循的原则包括( )。
C.
保证饵料既新鲜又有营养,不可投喂变质或过期的饵料
D.
根据观赏鱼的大小、摄食情况、季节特点决定投喂的饵料量
【简答题】Doctor: Your heart rate is normal. Can you open your (1) and go “ah”? Victor: Ah. Doctor: Good. Now let me look inside your (2) . Victor: What (3) you see? Doctor: Everything looks fine. All your vita...
【单选题】电缆接续开剥电缆时,距外护套切口( )mm处用克丝钳将钢带(双层)折弯90度
【简答题】从方框中选出最佳选项完成下面的对话。 A: I’m tired of watching TV. 小题1: B: Good idea. What’s on this week? A: Let me see. 小题2: It’s very popular. B: Really? What’s it about? A: 小题3: It was written in 1896. B: Why is it ...
【单选题】长途电缆接续时外护套开剥完后,在距外护套切口()处用铁丝绑扎。