blocks have been overhauled
hauling parts of two tackles are attached
hauling part leads through the movable block
hauling part leads through the standing block
第1题:
An advantage of DC motors over AC motors is that they______.
A.are less expensive
B.require less maintenance
C.can be started across the line
D.offer a more effective means of controlling speed
第2题:
A block and tackle is rove to advantage.This means that the ______.
A.blocks have been overhauled
B.hauling parts of two tackles are attached
C.hauling part leads through the movable block
D.hauling part leads through the standing block
第3题:
A、assistance
B、assistant
C、associate
D、assit
第4题:
Since the freight payments are taken care of by the freight forwarder, the carrier doesn′t have to take any ().
第5题:
单样本t检验应当选择的操作菜单是()
第6题:
A tackle is "two blocked" when the blocks are ______.
A.equally sharing the load
B.jammed together
C.as far apart as possible
D.rove to the highest mechanical advantage
第7题:
多因素方差分析应选择的操作菜单是()
第8题:
The trend nowadays is to build the frame box as a separate fabricated construction and then, after stress relieving and machining the mating surfaces, to mount it on the _____. This has the advantage of saving weight.
A.seating
B.bed-plate
C.entablature
D.cylinder block
第9题:
Which of the following is not an advantage of block media recovery (BMR)?()
第10题:
something very sharp
the outside limit or boundary
the degree of anger, nervousness or annoyance
a slight advantage over somebody