【单选题】【消耗次数：1】
发生光化学烟雾事件的主要污染物是
①
SO2和颗粒物
②
SO2和NOx
③
CO和NOx
④
碳氢化物和NOx
参考答案：
复制
纠错
相关题目
随机题目
【单选题】
Recent medical studies ( ) the effectiveness of a healthier lifestyle.
①
confirmed
②
composed
③
competed
④
contacted
【单选题】
It is not necessary to ( ) these roles as provider and user.
①
confuse
②
promote
③
designate
④
serve
【单选题】
It was Doctor Tomas ( ) we invited to give us a lecture.
①
which
②
who
③
when
④
whom
【单选题】
Mary ( ) her daughter into going for a walk after supper.
①
said
②
told
③
spoke
④
jollied
【单选题】
How many major ( ) can you play in your daily life?
①
members
②
roles
③
aspects
④
identities
【单选题】
There will be both the ( ) and opportunity for native manangment software enterprises.
①
substance
②
challenge
③
facility
④
property
【单选题】
His object is to gather as great a ( ) of genetic material as possible.
①
diversity
②
curiosity
③
anxiety
④
creativity
【单选题】
That is not a judgment that a manager should make ( ) his or her own.
①
by
②
in
③
of
④
on
【单选题】
Keeping a proper ( ) between study and rest keeps us energetic.
①
background
②
balance
③
basis
④
behavior
【简答题】
将句子翻译成英文：寻求幸福最好的方式是首先知道什么是幸福。 (the best way to...is to...)