1×7-15.20-1860-GB∕T 5524——2014，是下列哪种钢材产品的标记？
1×7-15.20-1860-GB∕T 5524——2014，是下列哪种钢材产品的标记？
I ____ any job I like since I came to this city. (2014) A: haven't done B: don't do C: wouldn't do D: didn't do
I ____ any job I like since I came to this city. (2014) A: haven't done B: don't do C: wouldn't do D: didn't do
Pitifully, Chinese fans won’t have their own teams to ______ for throughout the Rio 2014 World Cup.
Pitifully, Chinese fans won’t have their own teams to ______ for throughout the Rio 2014 World Cup.
[2014•北京卷] We ________back in the hotel now if you didn't lose the map.[1分]
[2014•北京卷] We ________back in the hotel now if you didn't lose the map.[1分]
20180264《信息安全技术云计算服务安全指南》(GB/T 31167- 2014) 属于
20180264《信息安全技术云计算服务安全指南》(GB/T 31167- 2014) 属于
某一处于热平衡状态下的非简并半导体掺有施主杂质浓度为ND=5×1017cm-3，当温度为300 K时杂质已全部电离，已知本征载流子浓度为ni=1015 cm-3，则电子和空穴浓度分别为（ ） A: n0=2×1015 cm-3，p0=1×1017 cm-3 B: n0=5×1017cm-3，p0=2×1012 cm-3 C: n0=5×1017 cm-3，p0=2×1015 cm-3 D: n0=2×1015 cm-3，p0=5×1015 cm-3
某一处于热平衡状态下的非简并半导体掺有施主杂质浓度为ND=5×1017cm-3，当温度为300 K时杂质已全部电离，已知本征载流子浓度为ni=1015 cm-3，则电子和空穴浓度分别为（ ） A: n0=2×1015 cm-3，p0=1×1017 cm-3 B: n0=5×1017cm-3，p0=2×1012 cm-3 C: n0=5×1017 cm-3，p0=2×1015 cm-3 D: n0=2×1015 cm-3，p0=5×1015 cm-3
[2014•重庆卷] James has just arrived, but I didn't know he ________ until yesterday.[1分]
[2014•重庆卷] James has just arrived, but I didn't know he ________ until yesterday.[1分]
有的小学生在学习英文字母“t”时,常常会发出汉语拼音“t”的音,造成这种干扰现象的原因是( )。(2014年下半年)
有的小学生在学习英文字母“t”时,常常会发出汉语拼音“t”的音,造成这种干扰现象的原因是( )。(2014年下半年)
以下代码输出的结果是（ ） A: 1015 B: 1010 C: 1510 D: 1515
以下代码输出的结果是（ ） A: 1015 B: 1010 C: 1510 D: 1515
1TB硬盘有( ) 个字节 A: 1012 B: 106 C: 1015 D: 109
1TB硬盘有( ) 个字节 A: 1012 B: 106 C: 1015 D: 109