皮皮学,免费搜题
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【单选题】
人体最主要的排泄器官是
A.
肠道
B.
泪腺
C.
D.
皮肤
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【简答题】将 Rp 大致调到中间位置,仅闭合 K2 ,用示波器观察 J1 点的波形是 , J2 点的波形是 , J7 点的波形是 , J8 点的波形是 。(以上填正弦波 / 三角波 / 矩形波 / 尖峰波)
【单选题】—What are you going to do? —I will buy a book________. [     ]
A.
to my sister
B.
for my sister
C.
of my sister
D.
at my sister
【单选题】What type of sentence is 'My sister likes apple, but I like orange.'?
A.
A simple sentence.
B.
A coordinate sentence.
C.
A compound sentence.
D.
A complex sentence.
【判断题】墙面和展板上的展品陈列位置,一般是从距离地面80cm起 ,上320cm为止。
A.
正确
B.
错误
【单选题】在RLC串联正弦交流电路中,已知R=20Ω,XL=40Ω,Xc=80Ω,则该电路呈( )。
A.
电阻性
B.
电感性
C.
电容性
D.
中性
【判断题】在 RLC 串联 正弦 交流电路中, 已知R =20 Ω ,XL =80 Ω ,Xc =40 Ω ,则该电路呈电感性。( )
A.
正确
B.
错误
【简答题】Sunday________(1) the favorite day for our family. My parents________(2) not________(3) work. My sister and I ________(4) go to school. We________(5) at home and________(6) in the morning. In the afte...
【单选题】在RLC串联正弦交流电路中,已知R=20Ω,XL=80Ω,XC=40Ω,则该电路呈( )。
A.
电容性
B.
电阻性
C.
电感性
D.
中性
【单选题】My vessel is healthy and I request free pratique.What does the sentence My vessel is healthy mean?It means: ______.
A.
My ship has been maintained
B.
My ship has been painted
C.
All my crew members have been vaccinated
D.
All my crew members have no quarantinable diseases
【单选题】电子商务的本质特性是
A.
商务性
B.
服务性
C.
全球性
D.
低成本性
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