Investigators agreed that passengers on the airliner ______ at the very moment of the crash.
A. ought to die
B. must have died
C. must be dying
D. should have died
数据寻址和指令寻址的不同点在于______。
A. 前者决定操作数地址,后者决定程序转移地址
B. 前者决定程序转移地址,后者决定操作数地址
C. 前者是短指令,后者是长指令
D. 前者是长指令,后者是短指令
长期应用利尿剂的降压作用机制是
A. 排钠利尿,减少血容量
B. 降低血浆肾素活性
C. 增加血浆肾素活性
D. 减少血管平滑肌细胞内的钠离子
E. 抑制醛固酮的分泌
He wrote the book in ______ with his wife.
A. proportion
B. installment
C. correspondence
D. collaboration