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【单选题】
定义在R上的函数f（x）满足f（x+6）=f（x），当-3≤x＜-1时，f（x）=-（x+2），当-1≤x＜3时，f（x）=x，则f（1）+f（2）+f（3）+…+f（2012）= [     ]
A.
335
B.
338
C.
1008
D.
2012
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举一反三
【简答题】请将下列句子进行排序: 1. Thanks and best regards. 2. Kindly note the price should be USD 90 + 15% and a good view. 3. We would be obliged if you would arrange the hotel accommodation for Mr. William Ghost on Ju...
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【单选题】在人体内.维生素D3的主要活性形式是
A.
25-OH-D3
B.
1,25-(OH)2-D3
C.
1-OH-D3
D.
7-脱氢胆固醇
E.
麦角固醇
查看完整题目与答案
【单选题】Should your price _____ competitive, we will place a trial order _____you.
A.
is; with
B.
are; from
C.
is; from
D.
be; with
查看完整题目与答案
【单选题】维生素D3的主要活性形式是( )
A.
1－（OH）D3
B.
25－（OH）D3
C.
1，25－（OH）2D3
D.
24，25－（OH）2D3
查看完整题目与答案
【简答题】Katharina I’m in 1 _______ of February or March. There’s a gap in the market for our products. Why wait any longer? Inge ... Kenneth, what’s your opinion? Kenneth Mmm, ...
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【简答题】Fill in each of the following blanks with one appropriate word. Dear Mr. Wang, Thank you for your letter of the 20th August, __ _1_ __ us 4,500 kilograms of peanuts at £ 5 per kilogram. We regret to s...
查看完整题目与答案
【简答题】Would you please send us _____ air your latest price list? 2. When quoting, please state terms of payment and discount you would allow _____ orders not less that 500 sets. 3. Should your computers be ...
查看完整题目与答案
【单选题】维生素D3的主要活性形式是:
A.
25-(OH)-D3
B.
1-(OH)-D3
C.
1,25-(OH)2-D3
D.
1,24-(OH)2-D3
查看完整题目与答案
【判断题】低压电器在实际应用中可通过改变反力弹簧的松紧实现反力特性和吸力特性的配合。（）
A.
正确
B.
错误
查看完整题目与答案
【单选题】____ your price be found competitive, we intend to place an order for 600 sets with you. A. would B. could C. shall D. should
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
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【简答题】请将下列句子进行排序: 1. Thanks and best regards. 2. Kindly note the price should be USD 90 + 15% and a good view. 3. We would be obliged if you would arrange the hotel accommodation for Mr. William Ghost on Ju...
查看完整题目与答案
【单选题】在人体内.维生素D3的主要活性形式是
A.
25-OH-D3
B.
1,25-(OH)2-D3
C.
1-OH-D3
D.
7-脱氢胆固醇
E.
麦角固醇
查看完整题目与答案
【单选题】Should your price _____ competitive, we will place a trial order _____you.
A.
is; with
B.
are; from
C.
is; from
D.
be; with
查看完整题目与答案
【单选题】维生素D3的主要活性形式是( )
A.
1－（OH）D3
B.
25－（OH）D3
C.
1，25－（OH）2D3
D.
24，25－（OH）2D3
查看完整题目与答案
【简答题】Katharina I’m in 1 _______ of February or March. There’s a gap in the market for our products. Why wait any longer? Inge ... Kenneth, what’s your opinion? Kenneth Mmm, ...
查看完整题目与答案
【简答题】Fill in each of the following blanks with one appropriate word. Dear Mr. Wang, Thank you for your letter of the 20th August, __ _1_ __ us 4,500 kilograms of peanuts at £ 5 per kilogram. We regret to s...
查看完整题目与答案
【简答题】Would you please send us _____ air your latest price list? 2. When quoting, please state terms of payment and discount you would allow _____ orders not less that 500 sets. 3. Should your computers be ...
查看完整题目与答案
【单选题】维生素D3的主要活性形式是:
A.
25-(OH)-D3
B.
1-(OH)-D3
C.
1,25-(OH)2-D3
D.
1,24-(OH)2-D3
查看完整题目与答案
【判断题】低压电器在实际应用中可通过改变反力弹簧的松紧实现反力特性和吸力特性的配合。（）
A.
正确
B.
错误
查看完整题目与答案
【单选题】____ your price be found competitive, we intend to place an order for 600 sets with you. A. would B. could C. shall D. should
A.
1
B.
2
C.
3
D.
4
查看完整题目与答案
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