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【单选题】
某四冲程八缸左旋机发火次序为1→2→4→6→8→7→5→3→1，当第7缸活塞在上止点时，处于进排气重叠角工况的是（）。A.
第1缸
B.
第2缸
C.
第3缸
D.
第4缸
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举一反三
【单选题】--- I’d like to buy a skirt like this. --- OK. We can buy ________ one than this, but ________ this.
A.
a good; not as cheap as
B.
a better; as expensive as
C.
a better; not as expensive as
D.
a better; not so cheap as
【单选题】How I wish _____ like that some day! [ ]
A.
could I buy a house
B.
should I buy a house
C.
I could buy a house
D.
I should buy a house
【单选题】应用相对数的注意事项中错误的是
A.
计算相对数，要求分母足够大，否则建议用绝对数描述
B.
率和构成比是性质不同的相对数指标，不能混淆使用
C.
如果要将两个率合并后计算平均率，应对两率求和后取平均
D.
内部构成不同的两组资料，不能直接比较总率，因为有混杂因素未被控制
E.
比较样本指标时要做假设检验
【单选题】、—__________ —I’d like to buy some apples.
A.
What can I do for you?
B.
What do you buy?
C.
What do you like?
D.
What would you like?
【单选题】—'Would you like a cup of coffee?' —'_______.' [ ]
A.
Yes, I'd like
B.
No, I wouldn't like
C.
Yes, thanks
D.
No, thanks
【单选题】---Mum, I’d like to buy trousers like Lucy’s ---OK, We can buy _______ than hers, but _______ hers.
A.
a cheaper one; as nice as
B.
a cheaper pair; as good as
C.
a better ones; not as cheap as
D.
a more important pair; not so nice as
【单选题】I’d like to take _____ of this trip to buy the things I need。
A.
advantage
B.
adventure
C.
advice
D.
advance
【单选题】使用相对数时应注意事项中错误的是
A.
计算相对数的分母不宜过小
B.
不要把构成比作率分析
C.
比较率的差别要有可比性
D.
各相对数的指标不能大于100%
E.
对样本率或构成比的比较应做假设检查
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