皮皮学,免费搜题
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【简答题】
Look at this mail-order advertisement: SUNSHINE COMPANY Products for a Safe Environment A2477—l You're going to love this natural soap(肥皂). There are no chemicals in it. It is very good for your hands and face. D4545—GARDEN SPRAY(喷雾) Insects are going to run away from our new chiligarlic spray. It's safe and natural. B2377—HOME CLEANER You're not going to need 5 or 6 chemical cleaners. You have Dr Clean! It is safe and strong, and it cleans everything in your house! A2104—CANVAS BAG You're going to say,“ No paper or plastic(塑料)!” You have this excellent heavy canvas shopping bag. item code price Natural shampoo T6762 $3.00 garden spray D4545 $2.50 canvas bag A2104 $4.00 hand soap A2477 $1.00 home cleaner B2377 $2.25 Postage(邮费):$3.50 小题1:Dr Clean is _________. A.a doctor good at cleaning everything B.a newly-invented machine C.a can of cleaning powder D.a magic cloth for cleaning 小题2: You're going to love the natural soap, because _________. A.it is cheap B.it smells sweet C.there are no chemicals D.it is powerful 小题3: According to the ad, how much do you have to pay for 3 shampoos and 2 canvas bags in all? A.$12.25. B.$20.50. C.$13.50. D.$17.
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【单选题】目前我国大部分地区以()为主。
A.
水培
B.
雾培
C.
基质培
D.
复合栽培
【单选题】以太网的数据帧封装如下图所示,包含在TCP 段中的数据部分最长应该是 (18) 字节。 (18)
A.
1434
B.
1460
C.
1480
D.
1500
【单选题】以太网的数据帧封装如图3-1所示,包含在TCP段中的数据部分最长应该是字节。 图 以太网的数据帧封装
A.
1434
B.
1460
C.
1480
D.
1500
【简答题】设函数 求: (1)函数的定义域; (2)f(0),f(-1),f(3),f(a),f(f(-1))
【判断题】目前我国大部分地区以水培为主。
A.
正确
B.
错误
【单选题】GPS 卫星一般都配有( )钟,其测时精度很高,误差可忽略。
A.
原子
B.
石英
C.
机械
【简答题】设 ,则f(-1)=______、f(0)=______、f(1)=______。
【简答题】设函数f(x)满足f(x+y)=f(x)+f(y)(x,y∈R),求证: (1)f(0)=0; (2)f(3)=3f(1); (3) f( 1 2 )= 1 2 f(1) .
【单选题】不适用于超声波雾化吸入的药物是( )
A.
a-糜蛋白酶
B.
庆大霉素
C.
沙丁胺醇
D.
青霉素
E.
地塞米松
【简答题】设函数 ,求: (1)函数的定义域5 (2)f(0),f(-1),f(3),f(a),f(f(-1));
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