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【判断题】
灰铸铁的塑性和韧性非常差,能用于制造承受拉伸的重要零件。
A.
正确
B.
错误
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【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
Drink 2 glasses of water.
B.
Drink one glass of water.
C.
Drink half a glass of water.
D.
Drink no more water.
【单选题】According to the last paragraph, what s a real challenge in this project?
A.
The high research and development costs.
B.
Disagreement and conflict among developers.
C.
Investors' on-going worry and doubt.
D.
Operation uncertainty in harsh environment.
【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
10:20.
B.
10:12.
C.
10:28.
D.
10:08.
【单选题】题目: 下列离子中,细胞膜在静息情况下对其通透性最大的是 编号: CCAAQUH
A.
Cl-
B.
Na+
C.
K+
D.
Ca2+
E.
Mg2+
【单选题】What is the author's main purpose in writing this article?
A.
To introduce the recent research on global wanning done by physiologists.
B.
To explain how plants, insects and microbes make humans sick.
C.
To warn people of the serious impact that the global warming will have on human health.
D.
To discuss the relation between climate change and life on earth.
【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
Mary needs training in public speaking lessons.
B.
Mary should be more active in her presentation.
C.
Mary didn't seem to be nerves at all during her presentation.
D.
She didn't understand what Mary was saying.
【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
The job is not rewarding but challenging.
B.
The job is both challenging and rewarding.
C.
The job has both its strength and weakness.
D.
The job is hard work and the pay is not satisfactory.
【单选题】下列离子中 , 细胞膜在静息情况下对其通透性最大的是 ()
A.
Cl-
B.
Na +
C.
K +
D.
K + Ca 2+
E.
Mg 2+
【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
She knows the guy who will give the lecture.
B.
She thinks the lecture might be informative.
C.
She wants to add something to her lecture.
D.
She'll finish her report this weekend.
【判断题】在Flash中,如果需要选中多个图形,只需按住【Ctrl】键,再点选对象即可。
A.
正确
B.
错误
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