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【单选题】
维生素C中铁的检查方法如下：取样品5.0g两份，分别置于25ml量瓶中，一份用0.1mol/L HNO3液溶解并稀释至刻度，作供试液(B)；另一份加入标准铁溶液(0.01mgFe/ml)1.0ml后，用0.1mol/L HN03液稀至刻度，作对照液(A)，用原子吸收分光光度法于248.3nm波长处分别测定(B)与(A)的读数为(b)与(a)，b应小于(a-b)。其杂质铁的限量是A.
0.0001%.
B.
0.0002%.
C.
0.0003%.
D.
0.0004%.
E.
0.0005%.
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【单选题】You are telephoning your Nigerian distributor from HQ where you are based. How might you start the conversation?
A.
Asking about his wife.
B.
Asking if he has now sent the late payment (which is what prompted you to call him in the first place).
C.
Hoping that he and his family are well.
D.
Asking him how his business is doing.
【简答题】If she’s not at home, you ______ try telephoning her at the office. A．will B．could C．would D．need
【单选题】The telephoning expression "Thanks for calling" is used __________.
A.
at the beginning of telephoning
B.
to mean you're going to end talking
C.
to mean you want to say something else
D.
to mean you are tired of talking
【单选题】I’m glad you’ve come; I am _______ telephoning you.
A.
at the point of
B.
to the point of
C.
on the point of
D.
in the point of
【单选题】Using phrases for telephoning: Could you ( )Mr Kart, please?
A.
hold on
B.
hang up
C.
pencil you in
D.
put me though to
【简答题】You will hear five people talking about telephoning.
【单选题】汽车行驶平顺性常用垂直振动参数评估,包括频率和振动加速度等,此外悬架静挠度也用来作为评价参数之一,请问乘用车悬架的静挠度fc的范围是
A.
100~300mm
B.
200~400mm
C.
300~500mm
D.
400~600mm
【单选题】插入光栅图像文件时,需指定以下()内容。
A.
图形文件名、插入点、缩放比例、旋转角度
B.
图像文件名、插入点、缩放比例、旋转角度
C.
块名、插入点、缩放比例、旋转角度
D.
插入点、缩放比例、旋转角度
【单选题】女孩，3岁。高热、咽痛、纳差3天。查体：咽部充血，眼结膜充血，颈部、耳后淋巴结肿大。心肺无异常。最可能的病原体是
A.
副流感病毒
B.
腺病毒
C.
单纯疱疹病毒
D.
柯萨奇病毒
E.
流感病毒
【简答题】I was _______ the point of telephoning him ?I was _______ the point of telephoning him when his letter arrived. A) to B) on C) at D) in
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