【单选题】Which of the following is NOT the reason why Sarkozy decided not to stand by Tony Blair?
A.
Tony Blair supported the Iraq War.
B.
Blair did not lead Britain into the Eurozone.
C.
Tony Blair could not excite the media.
D.
Britain is not in the passport-free area.
【简答题】直角坐标系中,标量场u=xy+yz+zx的梯度为A, 则 ∇×A= 。
【单选题】如果企业不单设“预收账款”账户,那么反映预收货款的账户是
【单选题】要使企业文化支付员工的薪酬水平保持一个合理的度,既不多付,也不少付,企业应进行()。