电动全关某阀门后发现泄漏过大，通过就地手轮将阀门关死后仍不能排除故障，则故障发生在（）
A、电机
B、减速器
C、电气控制部分
D、阀门故障
参考答案：D
阅读理解。
This is the twins' bedroom. It is a nice room. The two beds look the same. This bed is Lily's and that one
is Lucy's. The twins have two chairs and one desk. Their clock, books and pencil cases are on the desk.
Their backpacks are behind the chairs. Some nice flowers (花) are on the desk. Some pictures are on the wall.
Is there a baseball? Yes, it's under Lily's bed. The bedroom is very nice.
1. The twins are ______.
A. at home
B. have a nice room
C. in different room
D. in the same room
2. We can see ______ in the room.
A. one bed
B. two beds
C. Lucy's bed
D. Lily's bed
3. The clock is ______.
A. behind the door
B. behind the chair
C. on the desk
D. on the wall
4. Some ______ are on the desk.
A. pictures
B. flowers
C. chairs
D. clocks
5. We can find ______ under Lily's bed.
A. a backpack
B. some flowers
C. a basketball
D. a baseball
国民经济评价中费用效益包括( )。
A．直接效益与直接．费用
B．间接费用与效益
C．运输项目提供的运输服务
D．项目向政府交纳的税费
E．政府给予项目的补贴
