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下列有关元素的性质及其底边规律正确的是
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(以下试题六至试题八任选一题)阅读下列说明和C++代码，请回答问题1至问题3。【说明】已知下列程序运行时的输出应为：1:11:11:1【C++程序】01 #include ＜iostream＞02 using namespace std;03 class Stock{04 protect:05 (1) {};06 Stock(iht n, int pr=1){07 shares = n; share_val=pr;08 };09 void～Stock(){};10 public:11 //成员函数12 void output(){13 (2) ＜＜ shares ＜＜ ":" ＜＜ share val ＜＜ endl;14 }15 private:16 //成员变量17 int shares;18 int share_val;19 };2021 void main(){22 Stock a(1); a.output();23 Stock b; b.output();24 Stock c = Stock(); c.output();25 } 【问题2】 类Stock的定义中有两处错误，请指出错误所在行号并给出该行修改后的完整结果。
New Zealand Immigration Service (NZIS) introduces the Student Bank Loan Scheme to facilitate easier processing of student visa applications from Chinese people who want to go to New Zealand. It will make it easier for applicants or their parents to prove their financial ability to support the intended duration of study in NZ. Step 1: Applicants (or their parents) will apply for a loan to CIB directly. Step 2: CIB then considers the application for a loan. CIB requires deposits in the bank to be frozen and that they are at least 10% larger than the loan amount required. Step 3: If the loan is approved, CIB will then issue an ’Advice for Study Loan Abroad’ document to the applicant or their parents. Step 4: The applicant then lodges their visa application at the New Zealand Immigration Service (NZIS) together with their ’Advice for Study Loan Abroad’ document.Step 5: The NZIS processes the application (which may include verification of the ’Advice for Study Loan Abroad’ document) and if satisfied will notify the applicant that they have been approved-in-principle. Step 6: The applicant takes this notification to the bank and completes a special application form to activate the loan. CIB will then issue a ’Certificate of Credibility. Personal Loan for Study Abroad’ document, showing that the loan has been activated. Step 7: The applicant submits this document, together with the any other approval-in-principle requirements to NZIS, who then finalizes the application. Step 8: If the applicant completes their study in NZ before the duration of their loan, they contact the NZIS to get a letter saying that they have completed their study. NZIS will then issue a letter which the applicant then takes to CIB to release their funds.The following steps explain the operational procedures for the use of bank loan. A. Students apply to CIBB. CIB considers the Bank LoanC. CIB issues ‘Advice for Study Loan Abroad’ if loan approved D. Students lodge applications to NZISE. NZIS processes applicationsF. Students go to CIB to activate bank loan if applications approved G. Students provide ‘’Certificate of Credibility. Personal Loan for Study Abroad’ to NZIS to have their visa labels issued H. Students contact NZIS when course completed. If the loan is approved, NZIS will then issue an ’Advice for Study Loan Abroad’ document to the applicant or their parents.
(以下试题六至试题八任选一题)阅读下列说明和C++代码，请回答问题1至问题3。【说明】已知下列程序运行时的输出应为：1:11:11:1【C++程序】01 #include ＜iostream＞02 using namespace std;03 class Stock{04 protect:05 (1) {};06 Stock(iht n, int pr=1){07 shares = n; share_val=pr;08 };09 void～Stock(){};10 public:11 //成员函数12 void output(){13 (2) ＜＜ shares ＜＜ ":" ＜＜ share val ＜＜ endl;14 }15 private:16 //成员变量17 int shares;18 int share_val;19 };2021 void main(){22 Stock a(1); a.output();23 Stock b; b.output();24 Stock c = Stock(); c.output();25 } 【问题3】 指出该代码是否存在内存泄漏。
7、X、Y、Z、Q、R是五种短周期元素，原子序数依次增大。X、Y两元素最高正价与最低负价之和均为0；Q与X同主族；Z、R分别是地壳中含量最高的非金属元素和金属元素。请回答下列问题： (2)X与Y能形成多种化合物，其中既含极性键又含非极性键，且相对分子质量最小的物质（写分子式）________
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