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【单选题】
自动扶梯梳齿板两侧的间隙每边不应大于( )。A.
0.4
B.
0.6
C.
0.8
D.
1.0
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皮皮学刷刷变学霸
举一反三
【简答题】A: He fished over a bridge. B: He hooked a fish.
【单选题】路由器包含多种端口以连接不同类型的网络设备，其中能够连接 DDN、帧中继、X.25 和 PSTN 等广域网络的是（ ）。
A.
同步串口
B.
异步串口
C.
AUX 端口
D.
Consol 端口
【简答题】A．He thought Dr. Parker's tests were easy. B．Dr. Parker is no longer teaching history. C．The woman's source of information is reliable. D．He didn't enjoy taking history tests of Dr. Parker's.
【简答题】A．He tried to flatter Lisa. B．He was an acquaintance of Dr. Watts. C．He had heard of Lisa before. D．He was having a holiday at that time.
【单选题】What was Dr Hill doing?
A.
He was travelling around the country.
B.
He was looking for a job (工作，职责).
C.
He was visiting some of his friends.
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