皮皮学，免费搜题
登录
搜题
【单选题】
密码学中的杂凑函数(Hash函数)按照是否使用密钥分为两大类：带密钥的杂凑函数和不带密钥的杂凑函数，下面()是带密钥的杂凑函数。
A.
MD4
B.
SHA-1
C.
whirlpool
D.
MD5
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【简答题】(b) The Sarbanes-Oxley Act contains provisions for the attestation (verification) and reporting to shareholders of internal controls over financial reporting. Required: Describe the typical contents o...
查看完整题目与答案
【单选题】The Sarbanes Oxley Act of 2002 is intended to:
A.
protect financial managers from investors
B.
not have any effect on foreign companies
C.
reduce corporate revenues
D.
protect investors from corporate abuses
查看完整题目与答案
【多选题】下列电对中书写正确的是()
A.
Zn 2+ / Zn
B.
Cu 2+ / Cu
C.
Fe / Fe 3+
D.
H + /H 2
查看完整题目与答案
【单选题】One intent of the Sarbanes Oxley Act of 2002 is to:
A.
prevent minority investors from making demands on corporations.
B.
protect corporate directors from frivolous lawsuits.
C.
protect investors from corporate abuses.
D.
guarantee the repayment of all future personal loans to corporate officers and directors.
查看完整题目与答案
【判断题】一切物象占有一定的空间,物与物之间也存在着一定的空间距离。如画者与写生物的空间距离,被画物体之间的空间距离,被画物本身前后的空间距离,被画主体与背景的空间距离。。。。在素描中,利用物体的透视变化产生距离感,表现空间的技法,其中最基本的方法是透视原理的运用。
A.
正确
B.
错误
查看完整题目与答案
【单选题】下列反应的离子方程式书写正确的是
A.
将溶质物质的量之比为2∶7的三氯化铝溶液和氢氧化钡溶液混合 2Al 3+ + 7OH － = Al(OH) 3 ↓ + AlO 2 － + 2H 2 O
B.
将溶质物质的量之比为4∶3的硫酸氢钠和氢氧化钡溶液两溶液混合： 4H ＋ ＋3SO 4 2 － ＋3Ba 2 ＋ ＋4OH － ＝3BaSO 4 ↓＋4H 2 O
C.
用石墨电极电解碘化镁溶液 2 I － － 2 e － =' I' 2
D.
将16.8g铁粉投入100mL 4.0mol/L的HNO 3 溶液中（还原产物只有NO） 6Fe ＋ 20 H ＋ ＋ 5NO 3 － =  3Fe 2 ＋ ＋ 3Fe 3 ＋ ＋ 5NO↑ ＋10H 2 O
查看完整题目与答案
【多选题】下列离子（或电极）方程式书写正确的是
A.
硝酸银溶液中加入过量氨水：Ag + + NH 3 ·H 2 O = AgOH↓+ NH 4 +
B.
钢铁发生吸氧腐蚀的正极反应：4OH － －4e - ＝ 2H 2 O + O 2 ↑
C.
20mL0.1mol/LAlCl 3 溶液中加入70mL0.1 mol·L -1 NaOH溶液：2Al 3+ +7OH - ＝ Al(OH) 3 ↓+AlO 2 - +2H 2 O
D.
向Ba(OH) 2 稀溶液中逐滴加入NH 4 HSO 4 溶液至刚好沉淀完全：Ba 2+ +2OH - +H + + SO 4 2- + NH 4 + ＝BaSO 4 ↓+ NH 3 ?H 2 O+H 2 O
查看完整题目与答案
【简答题】中国科学家用蘸墨汁书写后的纸张作为空气电极,设计并组装了轻型、柔性、能折叠的可充电锂空气电池如图甲,电池的工作原理如图乙。下列有关说法正确的是 A .放电时,纸张中的纤维素作为锂电池的负极 B .充电时,若阳极放出 1mol O 2 ,则有 4mol e − 回到电源正极 C .开关 K 闭合给锂电池充电, X 对应充电电极上的反应为 Li + +e − =Li D .放电时, Li + 由正极经...
查看完整题目与答案
【单选题】According to the author, the Sarbanes-Oxley Act
A.
effectively eliminated the practice of backdating.
B.
leads to a larger percentage of lucky grants.
C.
guarantees that grants are reported immediately.
D.
helps to reduce the incidence of lucky grants.
查看完整题目与答案
【多选题】The Sarbanes-Oxley Act in 2002 ( ).
A.
requires corporations to have more independent directors
B.
requires the firm's CFO to personally vouch for the firm's accounting statements
C.
prohibits auditing firms from providing other services to clients
D.
requires corporations to have more independent directors and requires the firm's CFO to personally vouch for the firm's accounting statements
查看完整题目与答案
相关题目：
【简答题】(b) The Sarbanes-Oxley Act contains provisions for the attestation (verification) and reporting to shareholders of internal controls over financial reporting. Required: Describe the typical contents o...
查看完整题目与答案
【单选题】The Sarbanes Oxley Act of 2002 is intended to:
A.
protect financial managers from investors
B.
not have any effect on foreign companies
C.
reduce corporate revenues
D.
protect investors from corporate abuses
查看完整题目与答案
【多选题】下列电对中书写正确的是()
A.
Zn 2+ / Zn
B.
Cu 2+ / Cu
C.
Fe / Fe 3+
D.
H + /H 2
查看完整题目与答案
【单选题】One intent of the Sarbanes Oxley Act of 2002 is to:
A.
prevent minority investors from making demands on corporations.
B.
protect corporate directors from frivolous lawsuits.
C.
protect investors from corporate abuses.
D.
guarantee the repayment of all future personal loans to corporate officers and directors.
查看完整题目与答案
【判断题】一切物象占有一定的空间,物与物之间也存在着一定的空间距离。如画者与写生物的空间距离,被画物体之间的空间距离,被画物本身前后的空间距离,被画主体与背景的空间距离。。。。在素描中,利用物体的透视变化产生距离感,表现空间的技法,其中最基本的方法是透视原理的运用。
A.
正确
B.
错误
查看完整题目与答案
【单选题】下列反应的离子方程式书写正确的是
A.
将溶质物质的量之比为2∶7的三氯化铝溶液和氢氧化钡溶液混合 2Al 3+ + 7OH － = Al(OH) 3 ↓ + AlO 2 － + 2H 2 O
B.
将溶质物质的量之比为4∶3的硫酸氢钠和氢氧化钡溶液两溶液混合： 4H ＋ ＋3SO 4 2 － ＋3Ba 2 ＋ ＋4OH － ＝3BaSO 4 ↓＋4H 2 O
C.
用石墨电极电解碘化镁溶液 2 I － － 2 e － =' I' 2
D.
将16.8g铁粉投入100mL 4.0mol/L的HNO 3 溶液中（还原产物只有NO） 6Fe ＋ 20 H ＋ ＋ 5NO 3 － =  3Fe 2 ＋ ＋ 3Fe 3 ＋ ＋ 5NO↑ ＋10H 2 O
查看完整题目与答案
【多选题】下列离子（或电极）方程式书写正确的是
A.
硝酸银溶液中加入过量氨水：Ag + + NH 3 ·H 2 O = AgOH↓+ NH 4 +
B.
钢铁发生吸氧腐蚀的正极反应：4OH － －4e - ＝ 2H 2 O + O 2 ↑
C.
20mL0.1mol/LAlCl 3 溶液中加入70mL0.1 mol·L -1 NaOH溶液：2Al 3+ +7OH - ＝ Al(OH) 3 ↓+AlO 2 - +2H 2 O
D.
向Ba(OH) 2 稀溶液中逐滴加入NH 4 HSO 4 溶液至刚好沉淀完全：Ba 2+ +2OH - +H + + SO 4 2- + NH 4 + ＝BaSO 4 ↓+ NH 3 ?H 2 O+H 2 O
查看完整题目与答案
【简答题】中国科学家用蘸墨汁书写后的纸张作为空气电极,设计并组装了轻型、柔性、能折叠的可充电锂空气电池如图甲,电池的工作原理如图乙。下列有关说法正确的是 A .放电时,纸张中的纤维素作为锂电池的负极 B .充电时,若阳极放出 1mol O 2 ,则有 4mol e − 回到电源正极 C .开关 K 闭合给锂电池充电, X 对应充电电极上的反应为 Li + +e − =Li D .放电时, Li + 由正极经...
查看完整题目与答案
【单选题】According to the author, the Sarbanes-Oxley Act
A.
effectively eliminated the practice of backdating.
B.
leads to a larger percentage of lucky grants.
C.
guarantees that grants are reported immediately.
D.
helps to reduce the incidence of lucky grants.
查看完整题目与答案
【多选题】The Sarbanes-Oxley Act in 2002 ( ).
A.
requires corporations to have more independent directors
B.
requires the firm's CFO to personally vouch for the firm's accounting statements
C.
prohibits auditing firms from providing other services to clients
D.
requires corporations to have more independent directors and requires the firm's CFO to personally vouch for the firm's accounting statements
查看完整题目与答案