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【单选题】
短波段无线电波具有许多特点,下面哪一种描述是错误的( )
A.
短波的电波波长为10—100m
B.
电离层对电波的衰减与频率无关
C.
天波作用距离较远
D.
沿地面传播时,衰减很快
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【简答题】A.They had no time. B.They couldn't afford it. C.The old one was still in use. D.They both want to buy another new car.
【单选题】病人,男,50岁,某日在烈日下劳动4小时后感到头晕乏力,随后昏倒在地,神志不清,急送医院,头颅CT检查未见异常。查体:体温41°C,心率135次/分,律齐,血压90/60nnHg深昏迷,双下肢阵发性抽搐,大小便失禁。该病人属于中暑中的哪一类型
A.
A热射病
B.
B热痉挛
C.
C热衰竭
D.
D先兆中暑
E.
E轻度中暑
【单选题】— The room is so dirty. we clean it? — Ofcourse.
A.
Will
B.
shall
C.
would
D.
do
【单选题】—The price of this dress is______.You can buy one, Miss Kitty. —But I still don't have enough money. [     ]
A.
cheap
B.
  low
C.
  high
D.
expensive
【单选题】I've _______ all the photos in the drawer, but I still can't find the one you need. [     ]
A.
opened up
B.
given away
C.
looked over
D.
taken off
【判断题】光纤传感器可以用来分辨各种颜色。
A.
正确
B.
错误
【单选题】病人,男, 50 岁,某日在烈日下劳动 4 小时后感到头晕乏力,随后昏倒在地,神志不清,急送医院,头颅 CT 检查未见异常。查体:体温 41 °C,心率 135 次 / 分,律齐,血压 90/60nnHg 深昏迷,双下肢阵发性抽搐,大小便失禁。该病人属于中暑中的哪一类型
A.
热辐射
B.
热痉挛
C.
热衰竭
D.
先兆中暑
E.
轻度中暑
【单选题】The price of the portable computers(手提电脑) is still sothat I can’t afford to buy one.A.highB.
A.
64. The price of the portable computers(手提电脑) is still so       that I can’t afford to buy one. A.high
B.
low
C.
expensive
D.
Dear
【单选题】病人,男,50岁,某日在烈日下劳动4小时后感到头晕乏力,随后昏倒在地,神志不清,急送医院,头颅CT检查未见异常。查体:体温41℃,心率135次/分,律齐,血压90/60nnHg 深昏迷,双下肢阵发性抽搐,大小便失禁。该病人属于中暑中的哪一类型()
A.
热辐射
B.
热痉挛
C.
热衰竭
D.
先兆中暑
E.
轻度中暑
【单选题】—The room is so dirty. _____ we clean it?   ' —Of course. [     ]
A.
Let's
B.
Would
C.
Do
D.
Shall
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