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【单选题】
下列有关化学用语表示正确的是 ①CSO的电子式: ②对硝基苯酚的结构: ③Cl - 的结构示意图: ④甲烷分子的比例模型: ⑤葡萄糖的实验式:CH 2 O         ⑥原子核内有20个中子的氯原子: 2017 Cl ⑦ HCO 3 - 的水解方程式为:HCO 3 - +H 2 O CO 3 2 - +H 3 O +
A.
①④⑤
B.
②③④⑥
C.
③⑤⑥⑦
D.
全部正确
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参考答案:
举一反三
【单选题】An airport is located next to a housing development. Where X is the number of planes that land per day and Y is the number of houses in the housing development, profits of the airport are 22X-X 2 and ...
A.
H1 = H2 = 10.
B.
H1 = 10 and H2 = 13.
C.
H1 = 13 and H2 = 10
D.
H1 = 12 and H2 = 12
【单选题】通过Console配置路由器时,终端仿真程序的正确设置是()。
A.
48006ps、8位数据位、1位停止位、奇校验和无流控
B.
96006ps、8位数据位、1位停止位、无校验和无流控
C.
96006ps、8位数据位、1位停止位、偶校验和硬件流控
D.
192006ps、8位数据位、1位停止位、无校验和无流控
【单选题】2019 年9月甲公司销售产品取得含增值税价款113000元,另收取包装费7910元。已知增值税税率为13%。甲公司当月该笔业务增值税销项税额的下列计算中,正确的是( )。
A.
113000*(1+13%)*13%=13000 (元)
B.
(113000+7910)/(1+13%)*13%=13910 (元)
C.
113000*13%=14690 (元)
D.
(113000+7910)*13%=15718.30 (元)
【简答题】请认真听下面一段录音,在短文空白的位置写出正确的答案。录音将反复播放三遍,请听录音。 Many people are superstitious about numbers. They think that there are lucky numbers and unlucky numbers. The number “13” is often 1 unlucky. In some parts o...
【多选题】计算机网络的物理构成有哪些
A.
通讯协议
B.
计算机终端
C.
网络设备
D.
传输介质
【单选题】2019年9月甲公司销售产品取得含增值税价款113000元,另收取包装物租金6780元。已知增值税税率为13%,甲公司当月该笔业务增值税销项税额的下列计算中,正确的是( )
A.
113000÷(1+13%)×13%=13000(元)
B.
(113000+6780)÷(1+13%)×13%=13780(元)
C.
113000×13%=14690(元)
D.
(113000+6780)×13%=15571.4(元)
【简答题】阅读理解。 In some countries, some people do not like the number 13.They don't think 13 is a lucky number. For example. they don't like to live on the l3th floor. One day, Jack asks some friends to dinner....
【简答题】阅读理解。 In some countries, some people do not like the number 13. They don't think 13 is a lucky number. For example, they don't like to live on the 13th floor. One day Jack asks some friends to dinner...
【判断题】如果for的循环体语句中没有使用continue语句,则以下for语句和while语句等价。 for (表达式1; 表达式2; 表达式3) for的循环体语句 表达式1; while (表达式2) { for的循环体语句; 表达式3; }
A.
正确
B.
错误
【简答题】Listen to some sentences and choose the number in the bracket you hear in each sentence. Tony's classroom is on the (30th/13th) floor of teh new teaching building.
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