【单选题】Beef is healthy ______ and juice is a healthy ______ . [ ]
【判断题】离心式鼓风机主要结构和工作原理与离心式通风机类似,单级叶轮所产生的压头很低,故一般采用多级叶轮
【单选题】No.14
A.
She is over the speed limit.
B.
She is on the wrong way.
C.
She is making a phone call.
D.
She is smoking while driving.
【判断题】效婚姻与可撤销婚姻都是一经确认,自始无效。
【单选题】Which of the following policies is NOT included in the British foreign trade policies?
A.
Generally, it has been adopting free trade policy.
B.
There are 7 free trade zones, where the government allows goods to be stored for shipment without tariffs or import duties.
C.
The government tends to have free trade policies for competitive enterprises in the UK.
D.
The government tends to have protective trade policies for foreign-market-oriented enterprises in the UK.
【单选题】The main difference between cancelable insurance policies and non-cancelable policies is______.
【判断题】离心式通风机与水泵的工作原理相似( )。