She usually wears casual（）.

1、What’s the difference between casual l

What’s the difference between casual listening and focused listening?

2、“Friction”和“Wear”分别是（）

“Friction”和“Wear”分别是（）A摩擦和磨损；B磨损和摩擦

3、The purpose of the wearing rings used

The purpose of the wearing rings used in a centrifugal pump is to （）.Aprevent an internal explosion in the pump when it is overheatedBenable...

4、Excessive piston ring wear in a diesel

Excessive piston ring wear in a diesel engine will cause（）Ahigh lube oil viscosityBincreased lube oil consumptionClow lube oil temperaturesDhigh firing pressure

5、Brides usually wear white wedding dres

Brides usually wear white wedding dresses，because white______ purity．Astands forBstands outCstands upDstands by

6、The casual attitude in the US does not

The casual attitude in the US does not mean（）no hierarchy in US companies.Athat isBthere isCthere areDthat are