问题
单项选择题
柴油的()是燃烧性能的标志,是表示柴油抗爆性的指标。
A.馏程
B.十六烷值
C.闪点
D.凝点和冷滤点
答案
参考答案:B
柴油的()是燃烧性能的标志,是表示柴油抗爆性的指标。
A.馏程
B.十六烷值
C.闪点
D.凝点和冷滤点
参考答案:B
完形填空。 | ||||
I'm Tina. I am an 1 girl. I 2 England. I 3 13 years old. I am 4 . I have a round face, a small nose, a wide mouth, long 5 and 6 eyes. I have a brother(哥哥). His name is James. He is a student, too. He 7 a big nose, a long face and short hair. His ears 8 big. We are 9 the same grade, but in different 10 . I'm in Class 3, and he is in Class 7.
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