皮皮学，免费搜题
登录
搜题
【单选题】
一平面简谐波表达式为 【图片】(SI)，则该波的频率 【图片】 (Hz)，波速 【图片】 (m/s)及波线上各点振动的振幅 【图片】 (m)依次为（ ）A.
0.5， 0.5， -0.05
B.
0.5， 1， -0.05
C.
0.5， 0.5， 0.05
D.
2， 2， 0.05
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】如果运算放大器为反相比例运算,R 1 =20 kΩ,R f =100 kΩ,输入电压为0.5 V,则输出电压应为________伏。
A.
－2.5
B.
＋2.5
C.
0.1
D.
－0.1 V
【单选题】Don't hurry! We can get to the bus station in time and we ____ the early bus.
A.
can miss
B.
won't miss
C.
will miss
【单选题】If you don't get up early, you'll ____ the bus. [ ]
A.
not miss
B.
miss
C.
catch
D.
lost
【单选题】Don't worry! We can get to the bus station in time and _________the early bus. A. B. C. D.
A.
don't miss
B.
can miss
C.
will miss
D.
won't miss
【单选题】Don't worry! We can get to the bus station in time and _________the early bus.
A.
don't miss
B.
can miss
C.
will miss
D.
won't miss
【单选题】You will miss the last bus __________ you don't hurry up.
A.
unless
B.
if
C.
or
D.
even though
【简答题】Don't worry! We can get to the
bus station in time and _________the early bus.A. don't miss B. can miss C. will miss D. won't miss
【多选题】A : Excuse me.Where is the Xiehe Hospital ? __ 3 1 __ B : Oh , it's a little( 有点儿 ) far. A : __ 3 2 __ B : Yes , you can take the subway to get there. A : By the way , where is the supermarket ? __ 3 ...
A.
I'm new here.
B.
What about you?
C.
No,you can't.
D.
No.101 bus or No.201 bus.
E.
Which stop should I get off?
F.
I need to buy something first.
G.
Can I take a subway to get there?
【简答题】单句改错。 1. Cet up early tomorrow. If don't,you'll miss the first bus. __________________________________________________________ 2. I asked him to see the film,but he didn't want. ______________________...
【简答题】Listen Donna, I don't care if you (miss) the bus this morning. You (be) late to work too many times. You are fired!
相关题目：