下列物理量中,属于标量的是 [ ]
A.速度
B.时间
C.位移
D.力
答案:B
The calculations, had they been done by hand, ______all practical value by the time they were finished.
A.had lost
B.would lose
C.should have lost
D.would have lost
根据下列资料完成36-40题 A公司和B公司签订一项购销合同,A公司向B公司开出一张30万元的银行汇票。B公司将汇票背书后向C公司转让,C公司又背书后向D公司转让。
如因受市场价格的影响,该业务的实际结算金额变为28万元,则( )。
A.该张汇票无效
B.银行以实际结算金额付款
C.刊登遗失声明
D.公示催告