【单选题】下列哪项不是理想化学消毒剂应具备的条件()
【多选题】国际贸易中,根据样品提供者不同,凭样品买卖可分为( )。
【单选题】使用中的氧气瓶和乙炔气瓶应()固定放置,氧气瓶和乙炔气瓶的距离不得小于5m,气瓶的放置地点不准靠近热源,应距明火l0m以外。
【单选题】Why is a dog sitting before a computer keyboard in a cartoon published by New Yorkers?
A.
Even dogs are interested in the computer.
B.
E-mail has become very popular.
C.
Dogs are liberated from their usual duties.
D.
E-mail deprives dogs of their owners' love.
【单选题】如果某基因上的突变对于该基因所编码的多肽无影响这一突变可能涉及( )。
【单选题】Which of the following statements is TRUE?
A.
Only British citizen has access to the New York Teaching Fellows program.
B.
Candidates should have graduated from the City University of New York.
C.
It's not required to have full certification for the candidates.
D.
Most candidates will teach in the key schools of the city.
【单选题】The caller warned that the bomb would explode when the plane______.
A.
took off from New York
【单选题】Which of the following city is located in Europe? ( )
【多选题】国际贸易中,根据样品提供者不同,凭样品买卖可分为( )