皮皮学，免费搜题
登录
搜题
【单选题】
利用Fluke 190测试仪示的波器功能观测电压波形时,带宽应设置为：A.
全频带
B.
10KHz
C.
20KHz
D.
20 MHz
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
【简答题】乡村服务业主要包括农业生产业、乡村 服务业等方面。
【单选题】Though he is _____ ugly boy, yet he often comes _____ first in the exams.
A.
a; /
B.
an; /
C.
an; the
D.
a ; the
【单选题】He often _______ the TV and watches the news when he comes home. [ ]
A.
opens
B.
turns on
C.
turns off
【单选题】He is very____.He often comes first in shot putting.
A.
simple
B.
strong
C.
strict
D.
small
【单选题】He often comes to work early and he is ____ late for work. [ ]
A.
usually
B.
never
C.
always
【单选题】He often comes to school ______ foot. But he came ______ his father's car today.
A.
by in
B.
on in
C.
on by
相关题目：