“两头在外、中间在内”的贸易方式指的是______
A、补偿贸易
B、加工贸易
C、一般贸易
D、边境贸易
We ________in the neighborhood.
A、happenedbeing
B、happenedbe
C、happenedtobe
D、arehappenedtobe
设随机变量X~N(1,4),F(x)为X的分布函数,Φ(x)为标准正态分布函数,则F(3)=()
A、Φ(05)
B、Φ(075)
C、Φ(1)
D、Φ(3)
A、关税壁垒
B、服务产品移动壁垒
C、人员移动壁垒
D、配额壁垒
E、服务生产者开业权壁垒
__________of the land in that district __________ covered with trees and grass.
A、Twofifth;is
B、Twofifths;is
C、Twofifth;are
D、Twofifths;are