建筑安装工程价格费用分为( )。
A.直接工程费 B.间接费C.利润及税金 D.服务费用
参考答案:A,B,C
阅读短文,判断正(T)误(F)。
My Sister and I
My name is Lily. I have a sister. Her name is Lucy. We are eleven. We are in the same school. We are in
the same class, too. We are good twin sisters.
We go to school at 7: 30. I like apples. She likes pears. I like playing basketball. She likes playing tennis.
( ) 1. Lucy and Lily are twins.
( ) 2. Lucy and Lily are in the same class.
( ) 3. Lily likes bananas.
( ) 4. Lucy likes playing football.
( ) 5. They are in different schools.
在选择变频器时,主要需要考虑以下几个技术指标:()。
A、负载机械的类型
B、变频器的电源系列和电源相数
C、输出频率范围
D、输入的电压、频率
E、额定容量