管道过热灯亮时(DUCTOVERHEAT),哪个过热电门闭合()。
A、190℉/88℃
B、210℉/99℃
C、250℉/121℃
D、390℉/199℃
参考答案:A
Read and judge. (读短文,判断下列语句是否正确.正确的画“√”,错误的画“×”)
Hello! My name is Anna. I am a girl and I'm from China. I have a happy family. My father and
my mother are teachers. My grandma is a nice woman. She keeps (养) a cat at home. I have two
friends. They are Kelly and Bobby. We often fly kites in the park.
( )1. Anna is a Canada girl.
( )2. Anna's mother is a teacher.
( )3. Anna's grandmother keeps a dog at home.
( )4. Anna often flies the kite in the park.
某商品每件成本72元,原来按定价出售,每天可卖10件,每天利润为成本的25%;后来按定价的90%出售,每天销售提高到原来的2.5倍,照这样计算,每天的利润比原来增加()元。
A.500
B.450
C.400
D.350