【单选题】Which statement of the following is NOT true according to the last paragraph?
A.
The two countries created a joint fishing zone.
B.
Fishermen in both countries are still not satisfied with the joint fishing zone.
C.
Tokdo, a small island in the East Sea is a dormant volcano.
D.
Both countries couldn't agree on who has sovereignty over Tokdo.
【判断题】二次小线回路如有,晶体管,集成电路,电子元件时,该部位的检查可以使用摇表测试,不应使用万用表测试回路是否接通。
【单选题】Which is not the characteristic of synaptic transmission?
B.
the summation of excitation
C.
susceptive to the changes of the internal environment
【单选题】有机物A的结构简式如右图,下列关于A的性质叙述中,错误的是
C.
A与氢氧化钠溶液完全反应时,两者物质的量之比是1∶3
【单选题】下列对有关物质: 的叙述中,不正确的是( )
A.
常温下,能与Na 2 CO 3 溶液反应放出CO 2
B.
能发生碱性水解,1 mol该有机物能消耗8 mol NaOH
D.
该有机物的化学式为C 14 H 10 O 9
【简答题】设由[0,1]中取n个可测子集E 1 ,E 2 ,…,E n 假定[0,1]中任一点至少属于这n个集中的P个,试证:这n个子集中必有一集,它的测度不小于5。
【单选题】有机物A的结构简式如图,下列关于A的性质叙述中,错误的是( )
C.
A与氢氧化钠溶液完全反应时,两者物质的量之比是1:3
【判断题】混凝土中氯离子测定试验,同一测区的不同取样孔,相同深度的粉末可收集在一个塑料袋内。
【单选题】Which of the following is NOT the common feature of eBay and the two new services, WhipCar and RelayRides?
A.
The feasibility of their service is/was doubted of.
B.
All of them serve as an intermediary.
C.
All of them offer auction services.
D.
All of them are operated online.
【单选题】下列有机物中,不能发生水解的是 A.CH 3 COOCH 3 B. CH 3 CONH 2 C. CH 3 COOH D.A、B、C均不能