用“拉面”技术换学日语，用Photoshop技能交换学拉小提琴，用杨氏太极招式交换摄

把下列句子改为间接引语

1. "What are you doing,Tom?"

    I asked Tom what                            .

2. "Do you often come to school by bus?"

    My classmate wanted to know if                     .

3. "Why can you finish it so soon,children?"

    Mom asked the children why                       .

4. "Li Xin is better at English than math," said the teacher.

    The teacher said that                            .

5. "My father has been to Hong Kong twice. " he said.

    He said that                              .

15个圆锥可熔铸成几个和圆锥等底等高的圆柱[ ]

A．5

B．15

C．45

企业转让资产，该项资产的净值，不准在计算应纳税所得额时扣除。

给农作物施肥时，只施化肥不施农家肥，可减少环境污染。[ ]

正常情况下，APU所需的压力来自：（）

A、自身燃油泵

B、油箱燃油泵

C、电瓶