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【单选题】
What does the sentence 'Individuals make it or don't make it essentially on their own' in the fifth paragraph mean?
A.
An individual makes his own living or does not do it.
B.
An individual is solely responsible for his success or failure.
C.
Individuals work separately and produce their own things.
D.
Individuals succeed or fail depending on their families.
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【单选题】影响汽油机燃烧过程的主要因素有压缩比、辛烷值、( )、混合气浓度、点火提前角、转速和负荷。
A.
温度
B.
压力
C.
燃烧室结构
D.
润滑油品质
【单选题】如何应对语言障碍和课业困难问题?
A.
做好预备,心理预期,行动准备,学科的英语表,增加听力输入,给自己创造机会,争取演说和展示的机会,保持好奇心
B.
听之任之,自暴自弃
C.
忘记使命,随便度过
D.
得过且过,麻痹大意
【简答题】结构体调用方式。
【简答题】用所给单词的适当形式填空。 1. It is raining ______ (heavy), I couldn't go out. 2. We enjoyed ______ (oneself) last Sunday. 3. We are excited ______ (see) each other. 4. The old man is very ______ (friend) to me. 5...
【判断题】BL lac星系的亮度无规变化,没有光谱线,有射电-X辐射。
A.
正确
B.
错误
【单选题】Read the passage and choose the correct ones.I've got a brother who is two years older than I am. Sometimes he's OK but other times he is a real pain in the neck. I'll give you some examples. Yesterda...
A.
The writer likes the friend.
B.
The friend wants to help with more than the math homework.
C.
The writer only wants the fiend to help with the math homework.
D.
The writer likes the friends.
【简答题】如图所示控制系统: 其阶跃响应曲线为: 试利用过程特性测试建模法确定系统数学模型。
【单选题】BL Lac天体的主要特点是( )。
A.
有非常强烈的射电波发射
B.
有射电—X辐射,极亮核,明线光谱
C.
星系中心部分有大量的物质喷发出来
D.
亮度无规则变化,没有光谱线,有射电—X辐射
【单选题】若运行时x=12,则运行结果为( ) {int x, y; scanf("%d", &x); y=x>12 ? x+10:x-12; printf("%d\n", y);}
A.
0
B.
22
C.
12
D.
10
【简答题】影响发动机点火提前角的主要因素有()和负荷
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