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【单选题】
供电电压允许偏差规定，（）供电电压允许偏差为额定电压的+7%～-10%。A.
一类负荷
B.
高压动力用户
C.
高压照明用户
D.
低压照明用户
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举一反三
【单选题】— bad weather! — I want to be a doctor when I grow up! [ ]
A.
What a, What
B.
How a, How
C.
What, How
【单选题】Man: Sam has bought a laptop. I felt I should buy one too. Woman: How can you hold a candle to him? What does his father do, do you know? Question: What does the woman mean?
A.
She suggests that the man try to make clear about Sam's father's occupation.
B.
She tells the man to light Sam up.
C.
She advises the man not to think of Sam.
D.
Sam has got a different family background from the man's.
【简答题】阅读下面的文字,按要求答题。( 7 分) 最近,网络流传“最伤父母心的冷暴力口语”,下面列出的 4 句颇能反映当今某些学生的 心态。请从中任选一句。再从( A )(B )题中任选一题,写一段话,不少于 150 字。 1 我吃什么我知道,别给我夹。 2 有事吗? 没事,我挂电话了。 3 说了你也不懂。 4 叫你别收拾我房间,东西都找不到了。 选 句。 ( A )描述一幅说这句话时的生活画面。 (B ...
【简答题】—Can you tell me Sam’s telephone number?— . Who is Sam? The newcomer?A．I think soB．That’s OKC．I’d—Can you tell me Sam’s telephone number? —____. Who is Sam? The newcomer? A．I think so B．That’s OK C．...
【单选题】It’s cheaper to buy old furniture than to have new ______ made.
A.
one
B.
ones
C.
furniture
D.
furnitures
【简答题】Sam: Sam Weiss, from I-Travel. Jenny: And your account number?Sam: IT2839.Jenny: （How can I help you?）
【单选题】— Sam, this is my friend, Jane、— _______
A.
I’m Sam.
B.
How are you?
C.
Glad to meet you, Jane.
D.
Very well, thank you.
【单选题】In order to protect your safety, it’s necessary to buy ________.
A.
the insurance
B.
the lodging
C.
the food
D.
the transportation
【单选题】设函数f(x)在区间I上的一个原函数为F(x)≡0,则在区间I上( ).
A.
f(x)的任一原函数都恒等于0
B.
f(x)的不定积分恒等于0
C.
f(x)≡C(C≠0)
D.
f(x)≡0
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