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搜题
【单选题】
糖尿病病人，需留尿作尿糖定量检查，正确的尿标本采集方法是（）A.
留清晨第一次尿约100ml
B.
饭前留尿100ml
C.
留24h尿
D.
用留取中段尿法留尿100ml
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【多选题】Which are the two key concepts for effectiveness?
A.
Economy
B.
Accuracy
C.
Beauty
D.
Depth
【多选题】Which two statements are true about the primary key constraint in a table？ （）
A.
It is not possible to disable the primary key constraint.
B.
It is possible to have more than one primary key constraint in a single table.
C.
The primary key constraint can be referred by only one foreign key constraint.
D.
The primary key constraint can be imposed by combining more than one column.
E.
The non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.
【多选题】Which two statements regarding asymmetric key encryption are true？（）
A.
The same key is used for encryption and decryption.
B.
It is commonly used to create digital certificate signatures.
C.
It uses two keys： one for encryption and a different key for decryption.
D.
An attacker can decrypt data if the attacker captures the key used for encryption
【多选题】Which of following are two key reasons for Nick's success? Click on two answers.
A.
Nike is the best brand of athletic footwear and sports clothing.
B.
The managers of Nike, Bowerman and Knight are both athletes.
C.
The company let Jordan endorse Nile's shoes.
D.
The diligence of the company managers.
【多选题】Which two statements about the Diffie-Hellman (DH) key exchange process are correct? （）(Choose two.)
A.
In the DH key exchange process, the session key is never passed across the network.
B.
In the DH key exchange process, the public and private keys are mathematically related using the DH algorithm.
C.
In the DH key exchange process, the session key is passed across the network to the peer for confirmation.
D.
In the DH key exchange process, the public and private keys are not mathematically related, ensuring higher security
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