Depending on the power sources, pumps used in hydraulic system are divided into engine driven pump, electrically driven pump and hand pump.

Job hunting outside of academia is driven by _______.

If we ______ in turn, you wouldn't have been so tired. A: drive B: drove C: had driven D: have driven

I at 130 kilometers per hours when the policeman stopped me. A: had driven B: have driven C: drive D: was driving

Only 2 of the 38 passengers survived the accident. If only the driver _____ more carefully. A: drove B: had driven C: drives D: has driven

1. In the ______ model, listening for gist and making use of the contextual clues and background knowledge to construct meaning are emphasized. A: text-driven B: bottom-up C: top-down D: word-driven

I ___________<br/>at 130 kilometers per hour when the policeman stopped me. A: had<br/>driven B: have driven C: drive D: was driving

If they had not _____ the car, I would have driven you.

Examples of expenses driven by sales volume includerent and insurance.

函数$f(x)=x+\sin x$的( )。 A: 上凸区间为$(2n\text{ }\!\!\pi\!\!\text{ },(2n+1)\text{ }\!\!\pi\!\!\text{ })$,下凸区间为$((2n-1)\text{ }\!\!\pi\!\!\text{ },2n\text{ }\!\!\pi\!\!\text{ })$ B: 上凸区间为$((2n-1)\text{ }\!\!\pi\!\!\text{ },2n\text{ }\!\!\pi\!\!\text{ })$,下凸区间为$(2n\text{ }\!\!\pi\!\!\text{ },(2n+1)\text{ }\!\!\pi\!\!\text{ })$ C: 上凸区间为$(n\text{ }\!\!\pi\!\!\text{ },(n+1)\text{ }\!\!\pi\!\!\text{ })$,下凸区间为$((n-1)\text{ }\!\!\pi\!\!\text{ },n\text{ }\!\!\pi\!\!\text{ })$ D: 上凸区间为$((n-1)\text{ }\!\!\pi\!\!\text{ },n\text{ }\!\!\pi\!\!\text{ })$,下凸区间为$(n\text{ }\!\!\pi\!\!\text{ },(n+1)\text{ }\!\!\pi\!\!\text{ })$