发动机起动时,打马达不动,犯“顶”的原因之一是发动机点火提前角过大。
参考答案:错
用所给单词的正确形式填空。
1. What are (this)?
2. Let's (have) a big ball.
3. Here (be) the answers.
4. What (do) she speak in this country?
5. Where (be) they from?
6. Australia (have) beautiful beaches.
根据132÷12=11,直接写出下列各题的得数.
13.2÷0.12=______13.2÷1.2=______.