汽油发动机点火提前角过大，致使汽缸压力升高过早，压缩功的消耗（），并可能引起爆燃，使耗油量增加。
A.减少
B.增加
C.不变
D.为零
参考答案：B
按给出的要求变换下列句子，要求每空限填一词。
1. She has a nice watch. (改为复数形式)
________ have some ________.
2. Nat went to a movie yesterday. (对划线部分提问)
________ did Nat ________ yesterday?
3. Jack did his homework last night. (变为否定句)
Jack ________ ________ his homework last night.
4. Jim has breakfast at six in the morning. (改为现在进行时)
Jim ________ ________ breakfast now.
5. They often go to the beautiful beach. (用last year改为一般过去时)
They ________ ________ to the beautiful beach last year.
党员诬告陷害他人意在使他人受纪律追究的，怎么处分？
