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【单选题】
防护栏杆由横杆及立柱组成。横杆 2 ~ 3 道,下杆离地高度 0.3 ~ 0.6 米,上杆离地高度 1.0 ~ 1.2 米;立柱间距不大于( )米,立柱离坡边距离应大于 0.5 米。防护栏杆外放置有砂、石、土、砖、砌块等材料时尚应设置扫地杆。A.
1
B.
2
C.
3
D.
3.5
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举一反三
【单选题】which seat can provide you with the best views?
A.
window seat
B.
aisle seat
C.
exit row seat
【单选题】We're going to the bookstore in John's car. You can come with us _____ you can meet us there later. [ ]
A.
but
B.
and
C.
or
D.
then
【单选题】We're going to the bookstore in John's car. You can come with us ______ you can meet us there later.
A.
but
B.
and
C.
or
D.
them
【单选题】Can I take the seat next to you? ________ .
A.
Thank you.
B.
Here you are.
C.
Don’t mention it.
D.
Yes, you can.
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