胰岛β细胞产生() ["胰高血糖素","促胰液素","生长素","胰岛素","生长抑素"]
某外交信使购买了一张A-B的客票,票价1000元,A-B成人Y舱单程最高直达票价是1300元,他准备为其30公的的外交信袋购买一个座位,应收取的费用是() ["A、1000元","B、1300元","C、585元","D、485元"]
诊断下呼吸道感染时,经支气管肺泡灌洗分离到病原菌数需() ["≥103cfu/ml","≥104cfu/ml","≥105cfu/ml","≥106cfu/ml","≥107cfu/ml"]
胰岛α细胞产生() ["胰高血糖素","促胰液素","生长素","胰岛素","生长抑素"]
假定其他因素既定不变,在非凯恩斯陷阱中,货币供给增加时,()。 ["利率将上升","利率将下降","利率不变","利率可能下降也可能上升"]
赤潮的危害包括哪些?