One way negotiators may convey the message that "this is the last offer" is by making the last concession substantial. （ ） A. 对 B. 错

The loop integral of the force in the conservative forc...

单项选择题The loop integral of the force in the conservative force field may not be zero. （ ） A. 对 B. 错

In western restaurants, the bill usually includes tax a...

单项选择题In western restaurants, the bill usually includes tax and service charge.
A、正确
B、错误

I have               up a schedule for you during your ...

单项选择题I have               up a schedule for you during your stay here. A.
drawn B.
picked C.
made D.
got