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【多选题】
关于滑车,下列说法正确的是（ ）。A.
动滑车可以省力
B.
定滑车可以改变受力方向
C.
动滑车越多越能省力
D.
滑车实际效率永远小于1
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【单选题】Why does Dr. Lovejoy think Ashley should not worry?
A.
Ashley is not healthy.
B.
Ashley is young.
C.
Ashley is having fun.
【单选题】【D9】 JOE: OH ASHLEY, YOUR DINNER LOOKS DELICIOUS! ASHLEY:【D8】______, JO E. WHAT WOULD YOU PREFER WITH YOUR MEAL—WINE, MANGO JUICE, OR WATER? JOE: MANGO JUICE WOULD BE A GOOD CHOICE FOR M E. ASHLEY: JU...
A.
YES, THAT CHICKEN LOOKS YUMMY
B.
I APPRECIATE THE COMPLIMENT
C.
DON'T FLATTER ME
D.
YES, CHICKEN AND RICE ARE A FAVORITE OF MINE
【简答题】磨削加工的实质是磨粒对工件进行（）、滑擦和刻划三种作用的综合过程。
【简答题】磨削加工的实质是磨粒对工件进行（）、滑擦和切削三种作用的综合过程。
【单选题】【D10】 JOE: OH ASHLEY, YOUR DINNER LOOKS DELICIOUS! ASHLEY:【D8】______, JO E. WHAT WOULD YOU PREFER WITH YOUR MEAL—WINE, MANGO JUICE, OR WATER? JOE: MANGO JUICE WOULD BE A GOOD CHOICE FOR M E. ASHLEY: J...
A.
YES, THAT CHICKEN LOOKS YUMMY
B.
I APPRECIATE THE COMPLIMENT
C.
DON'T FLATTER ME
D.
YES, CHICKEN AND RICE ARE A FAVORITE OF MINE
【单选题】【D8】 JOE: OH ASHLEY, YOUR DINNER LOOKS DELICIOUS! ASHLEY:【D8】______, JO E. WHAT WOULD YOU PREFER WITH YOUR MEAL—WINE, MANGO JUICE, OR WATER? JOE: MANGO JUICE WOULD BE A GOOD CHOICE FOR M E. ASHLEY: JU...
A.
YES, THAT CHICKEN LOOKS YUMMY
B.
I APPRECIATE THE COMPLIMENT
C.
DON'T FLATTER ME
D.
YES, CHICKEN AND RICE ARE A FAVORITE OF MINE
【简答题】磨削加工的实质是磨粒对工件进行 、滑擦（摩擦抛光）和切削三种作用的综合过程。
【简答题】磨削加工的实质是磨粒对工件进行（）、（）和（）三种作用的综合过程。
【单选题】What are Ashley and her dad talking about?
A.
Ashley’s grades
B.
Ashley’s major at school
C.
Ashley’s part-time job
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