【单选题】国家电网规定,在电力系统非正常情况下,频率偏差不应超过
【简答题】请将下列句子翻译为汉语。 1. Hello sir, how do you like to buy some duty-free goods? We have fine selections on board. 2. If you would like to buy some duty-free goods, just read the brochure in the seat pocket. 3...
【简答题】After learning "Duty-free Sales", you have known lots of famous-brand products such as Channel, Dior and Black Label and some typcially Chinese products. So please choose any itmes (not limited the i...
【判断题】波的特征量是波长λ、波的周期T(频率)、波速u,它们三者的联系是u=λ/T。
【多选题】When a passenger wants to buy a duty-free item and asks about the method of payment(支付方式), you should answer him by saying _______.
A.
You may pay by cash or credit card, please.
B.
Would you please scan the QR code with Wechat or Alipay.
C.
It's up to you. Anyway.
D.
We may accept Visa, Mastercard, or Unionpay card.
【判断题】企业之间相互融通资金可以直接通过同业拆借市场进行。
【判断题】刺激机体产生抗体,不需T细胞辅助的抗原称为胸腺依赖性抗原