问题
单项选择题
康明斯发电车中的PT喷油器安装在气缸盖中头部与缸盖间的密封座有（）个。
A.1
B.2
C.3
D.4
答案
参考答案：A
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康明斯发电车中的PT喷油器安装在气缸盖中头部与缸盖间的密封座有（）个。
A.1
B.2
C.3
D.4
参考答案：A
| 选择词组填空。 | |
2. ________ the teacher, He fell far behind other students as a result of laziness. 3. The government is doing its best to ________ those rare animals ________ being hunted. 4. I had warned him of the possible danger, but he didn't ________ it. 5. Elephants would ________ if men are allowed to shoot as many as they wished. 6. Children's lives are _________ every time they cross the road. 7. The two communities live together _________. 8. Hearing the funny story, all of us _________. 9. Why don't you start out early _________ you don't have to hurry? 10. No one was hurt, and we all smiled _________. |