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【简答题】
American technology company SpaceX says it ____1____ as many as ______2_____ . SpaceX is working with U.S.-based Space Adventures Inc. to offer the space flights, the two companies recently announced. No dates or costs for the flights were announced. Space Adventures has already helped _____3____ , or ISS, aboard Russian Soyuz rockets. The SpaceX trips ________4______ to the ISS. Instead, the tourists _____5_____ two to three times higher -- about ____6_____ kilometers above Earth.The citizens _____7____ SpaceX's Crew Dragon spacecraft, which ____8____ NASA astronauts. SpaceX is planning to use the Crew Dragon to launch its first NASA-crewed flight later this year. _____9_____ in space once so far, ______10_____ with no crew.
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【简答题】检查9个人的血型,其中A. 型2人, B. 型3人,O型3人,AB型1人,其对应的资料类型是 A.数值变量资料 B.9项无序分类资料 C. . 9项有序分类资料 D. .4项无序分类资料 E. .4项有序分类资料
【单选题】检查9个人的血型，其中A型2人，B型3人，O型3人，AB型1人。其对应的变量类型是
A.
数值变量
B.
9项无序分类变量
C.
9项有序分类变量
D.
4项无序分类变量
E.
4项有序分类变量
【单选题】下列 JavaScript 语句将显示()结果 var a1=10; var a2=20; alert(“a1+a2=”+a1+a2);
A.
a1+a2=30
B.
a1+a2=1020
C.
a1+a2=a1+a2
D.
" a1+a2= " 1020
【简答题】Task 3 listen and write no more than three words to complete the notes. Great success - China achieved great success in economy. - It started with the 1. _____________ in the late 1970s. Growth st...
【单选题】检查9个人的血型，其中A型2人，B型3人，O型3人，AB型1人。其对应的变量类型是
A.
数值变量资料
B.
二项无序分类变量
C.
多项有序分类变量
D.
有序分类变量资料
【单选题】检查 9个人的血型,其中A型2人,B型3人,O型3人,AB型1人。其对应的变量类型是
A.
定量数据
B.
9项定性数据
C.
9项有序数据
D.
4项定性数据
E.
4项有序数据
【单选题】要将页面的状态栏中显示 “已经选中该文本框”,下列 JavaScript 语句正确的是
A.
window.status= " 已经选中该文本框 "
B.
document.status= " 已经选中该文本框 "
C.
window.screen= " 已经选中该文本框 "
D.
document.screen= " 已经选中该文本框 "
【单选题】What is the pupation phase?
A.
The period when the butterfly lays her eggs.
B.
The period when the caterpillar is born.
C.
The period when the caterpillar feeds on leaves.
D.
The period when metamorphosis occurs.
【简答题】When was the Mayan Classical Period?
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