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【单选题】
下列关于颗粒物的描述不正确的是( )。A.
TSP是指大气中以固态或液态形成存在、空气动力学粒径小于或等于100μm的粒子
B.
重量法根据采样流量的不同，分为大流量采样重量法、中流量采样重量法和小流量采样重量法
C.
PM 10 即飘尘，测定的方法有重量法、压电晶体振荡法、β射线吸收法及光散射法等
D.
TSP、PM 10 、自然降尘均可用重量法测定
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举一反三
【单选题】When a student said in class, "I comed home at 6 o'clock yesterday", the teacher said "Came not comed”. Which rule of effective feedback does the teacher NOT obey?
A.
Relevance.
B.
Accuracy.
C.
Guidance.
D.
Timelines.
【简答题】The teacher said,"The sun rises in the east and goes down in the west." The teacher said that the sun in the east and down in the west.
【简答题】The teacher said "You are what you eat" to show the importance of eating ___________to stay healthy.
【单选题】The teacher said,"The sun rises in the east." The teacher said that the sun ______ in the east.
A.
rose
B.
risen
C.
would rise
D.
rises
【简答题】A. The teacher said, "That student is lazy." B. "The teacher", said that sudent, "is lazy." Question: Who was lazy?
【简答题】The teacher said , "He is waiting for the bus." The teacher said that he ___________ for the bus.
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