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【单选题】
关于 PH 对酶促反应速度影响的论述中,正确的是
A.
PH 过过低使酶发生变性
B.
偏离最适 PH 越远,酶的活性越高
C.
最适 PH 是酶的特征性常数
D.
PH 不影响酶促反应速率
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举一反三
【单选题】What type of tourist is described at the beginning of the reading?
A.
A first time tourist.
B.
An old tourist.
C.
A tourist who has travelled a lot.
D.
Young tourists.
【判断题】食品添加剂的安全问题主要有超量使用、隐瞒使用和违禁使用。
A.
正确
B.
错误
【单选题】若已定义int a=5,*p;且p=&a; 则以下表示中不正确的是()
A.
&a==&(*p)
B.
*(&p)==a
C.
&(*p)==p
D.
*(&a)==a
【单选题】现代社会对信息安全的需求大部分可以通过( )来实现
A.
认证技术
B.
密码技术
C.
访问控制技术
D.
安全协议
【判断题】人力资源兼有流量和存量概念特点,人力资本则是一个存量概念
A.
正确
B.
错误
【判断题】Single tourist product, in the angle of needs, it’s the total experience of a tourist.
A.
正确
B.
错误
【单选题】Receptionist:Grand Hotel,front desk. Tourist:I‘d like to reserve a room with a single bed. Receptionist:FB sorry,__________. Tourist:Oh,then can you recommend another hotel nearby?
A.
but we’re fully booked
B.
but we’re engaged
C.
but we’re wanted
D.
but we fully occupied
【简答题】Why is there an extra cost of 50 cents for a tourist ticket? For the tourist to keep the ticket as ________
【简答题】A.A dagger killed the tourist.B. The tourist was killed with a dagger.
【单选题】听力原文:(A) The tourist is climbing over the wall. (B) The tourist is taking off his backpack. (C) The tourist is consulting a map. (D) The tourist is going downtown.
A.
B.
C.
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