移动通信系统常用的无线接入方式有()、()、()三种。GSM系统采用的是()的方式。
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同学们正在野餐。请读对话,看看同学们分别喜欢吃些什么。
Wu Yifan: Have some juice! I like juice very much.
Bai Ling: No, thanks. I like Coke.
Sarah: Me too. And I like hamhurgers.
Mike: I like milk.
Wu Yifan: OK. Here you are.
Bai Ling: Thank you.
Wu Yifan: You are welcome.
Chen Jie: Can I have some chicken? I like chicken very much.
Wu Yifan: Sure. Here you are.
Chen Jie: Thank you.
Wu Yifan: You're welcome.
1. Wu Yifan likes _____________.[ ]
A. juice
B. bread
C. coffee
2. Bai Ling likes _____________.[ ]
A. Coke
B. tea
C. water
3. Sarah likes _____________.[ ]
A. pandas
B. hamburgers
C. French fries
4. Mike likes _____________.[ ]
A. milk
B. cake
C. green
5. Chen Jie likes _____________.[ ]
A. hot dogs
B. hamburgers
C. chicken
已知关于x的方程x2+(a+1)x+a-1=0的两根互为相反数,那么a=______.
下图所示的实验操作与方法正确的是( )
A.
检查装置的气密性
B.
过滤
C.
点燃酒精灯
D.
称量氯化钠
患者男性,50岁,骑车时摔伤,面部着地,当时即感颈部疼痛,双上肢无力,伴四肢麻木,行走不稳,无踩棉感,无胸腹束带感,二便正常
关于该患者的康复治疗,错误的是()
A.尽早行双上肢抗阻肌力训练
B.卧位时经常更换体位,预防褥疮
C.可行超短波等理疗减轻炎症反应
D.颈托保护下尽早行坐起及站立训练
E.发病3个月后颈托保护下行步行训练
小儿,7岁。自觉乏力、头痛1天后出现腮腺肿大,诊为流行性腮腺炎。化验血清和尿淀粉酶增高,下降至正常需要的时间约在______
A.3天
B.1周
C.10天
D.2周
E.3周