【简答题】Wood is becoming s______( 紧缺 )in the country and a new material must be found to replace it.
【判断题】在使用光纤作为传输介质时,当传输的距离比较远时,应使用多模光纤。
【简答题】A. It's being drained from Nebraska to Texas. B. It's being pumped out. C. It's becoming contaminated with oil D. It's becoming much warmer.
【判断题】左心耳因与二尖瓣邻近,常为心外科最常用乎术入路之一。
【单选题】产妇在分娩4小时内使用过麻醉剂,新生儿出生时无呼吸,应选择哪一种药物
【单选题】In the sentence 'an area covering 30% of the earth's land surface is desert, becoming desert, or in danger of becoming desert' , the part of ' is desert, becoming desert, or in danger of becoming dese...
A.
is becoming desert, has become desert, or will becoming into desert
B.
has been desert, is becoming desert, or will become into desert
C.
is becoming desert, will become desert, or becomes into desert
D.
has been desert, is becoming desert, or will become into desert
【单选题】首次换房、二次换房和退休置业四种不同的群体。这是考虑了消费者的()因素后制定的市场细分策略。