【判断题】Immigration officer will check the information on departure or arrival card by asking questions.
【多选题】Which of the following is the immigration officer search the luggage for?
【判断题】Immigration officer will not check whether your passport and the visa are valid.
【简答题】曾经认为DNA的复制是全保留复制,每个双螺旋分子都作为新的子代双螺旋分子的模板。如果真是这样,在Meselson和Stahl的实验中他们将得到什么结果?
【单选题】The immigration officer considered______
A.
there was something wrong in the boy's passport and disembarkation card.
B.
everything seems to be in order and asked the boy to go to the baggage claim area.
【单选题】心肌细胞膜上的肾上腺素能与胆碱能受体的分布主要是
【单选题】下列机械零件中,( )是专用零件而不是通用零件。